Lenni's video affected Josh severely due to his Asperger Syndrome. ASD suffers are known to have problems with sensory integration and filtering stuff out.
Why does DedSec always get followers no matter what they do or how violent their actions? Because Dusan is giving them the majority of their followers at the beginning. He just wants to lull them into a false sense of security. Afterward, they're a bunch of outlaws and those who follow them are the kinds of people who want to know more about them. There's no such thing as bad publicity after all.
The high prices for DedSec's firearms and gadgets is because all of them are 3D printed to order, even the military ones. Even if the blueprints were procured at no cost to DedSec, the cost of the material used to print the weapons is far from cheap.
Watch Dogs 2 no longer has Focus and gun takedowns like in Watch Dogs. Marcus is more hacking-oriented and is usually not the combat or killing type of person; in contrast, Aiden Pearce is a professional and experienced killer. Focus is a reflection of Pearce's reflexes and gun takedowns reflect his willingness to kill his enemies.
The use of Umeni as the security agency employed by most of the companies DedSec come up against makes sense when you remember that the Breakthrough DLC for WD 1 states that some, if not all the original founders of DedSec were former engineers for them (presumably for security systems) were scapegoated and rotted in jail, which led to DedSec's founding in the first place. Before Blume, Umeni was DedSec's orignial enemies.
Why did Enforcers go from heavily-armored glaciers in the first game to often being a fat man with a Kevlar vest? In Chicago the majority of criminal activity was organized around the Chicago South Club, which had the entire city in its pocket and could easily manage to sell such gear to their criminal allies. By contrast, there is no real central criminal authority in San Francisco, meaning that the gangs need to gather what they can.
A little fridge makes one appreciate how Josh played Lenni even more. The way she was squeeing over the nanotech and practically bouncing out of RenSense with it says she may not realize her new toy is disabled until she gets it back to her home base and has herself shot up with it. In the mission proper, the other DedSec members comment that the homeless people RenSense had been experimenting on would pass the now-inactive nanotech naturally. Which means that Lenni, to borrow Wrench's interpretation, will end up "pooping robots" for the next few weeks, literally flushing away hundreds of thousands of dollars' worth of bleeding-edge experimental tech she never got the chance to play with. "Don't fuck with the Hawt Sauce", indeed.
DedSec's name has multiple meanings, depending on what you take it as short for.
Dead Security: Whatever security you put on your secrets may as well be dead. Give them time and incentive, and they will find a way through and find out what you're hiding.
Dead Sector: A technical reference to an unreadable sector on a hard drive. DedSec operates through anonymity, and a big part of their campaign is preventing their members from being profiled by ctOS.
There's a Spider Tank in the game as part of Blume and Tidis' "10 Year Plan". Considering that the first game is set in 2013 and this game is in 2016, with the whole Digital Trip thing, how long until the US government, under Blume's orders, were ready to deploy these things on civilians?
Wrench hates animals. It's implied he had an abusive childhood. Begging the question, did his parents hurt his pets? Did his parents' pets hurt him?
DedSec has, by the end of the game, crossed: The NSA, Greystrom, the FBI, Blume, the Church of the New Dawn, a couple of insurance firms, Haum, Nudle, the Sons of Ragnarok, the Bratvas, the Auntie Shu Boys, the Tezcas, a prominent politician, and the douchebag leader of a pharmaceutical giant. They've made a LOT of enemies and very few friends. It may require going underground like Aiden Pearce to survive.
They kind of already are underground. Also they didn't cross these groups, they took them to the cleaners, New Dawn certainly was basically ruined, and the Tezcas were massacred, while they may be angry at the crew, it's equally likely that they are the ones who are afraid, or should be...
T-Bone killed eleven innocent people when he shut down the power along the Eastern Seaboard. How many innocent people died when DedSec shut down South Korea's power grid?
Consider that South Korea is still in war with North Korea, the Norks probably would take this opportunity and invade the South. So probably Ded Sec helped to start a war, and helped the ENEMIES of the United States.
How does Wrench's mask work? He doesn't appear to have any buttons to control it, and it's too thin to have any kind of facial tracking. Also, while we're on the topic, how does Wrench see out of the thing when his eyes are covered by LED screens?
A pressure-sensitive layer on the inside using microswitches would be feasible; as he smiles, frowns, or whatever, different parts of his face would contact different parts of the mask. A given contact pattern would trip a particular emote on the display. Granted, realistically, ironing the bugs out of the software responsible for filtering out spurious results (such as while talking) and reliably mapping them to an eemote would be a nightmare if not outright impossible, but that's why we have Rule of Cool.
As for visibility, that's at least straightforward - the goggles section appears to have a structure similar to a fencing mask. It's like looking through a window screen, but your visibility is at least decent.
Computers require a lot of cooling to keep the components functional. That's why they have heatsinks and cooling fans, and that's also why a computer will immediately power off when overheating; to protect the hardware. So how was Marcus able to do anything in the conduit, where the temperature was reportedly 120 degrees (assuming Fahrenheit), and where you could see the air ripple with heat, without the computer failing due to overheating?
Three reasons. 1) The computer itself didn't start out hot, so it has a short-lived benefit courtesy of thermodynamics as it wouldn't heat instantly, just quickly; 2) He didn't use it for very long - just a few keystrokes, really; 3) He didn't do anything too intense with it. Logic generates heat, the harder the processor is working, the more heat it would generate, and simple tasks generate less thermal load. He couldn't've worked in there for long, but for the brief time we see, it probably would've been fine.