These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Values Dissonance: The drug use and the indifference most of the people have to that is only part of the problem. No one - least of all the victim - seems to mind that a kidnapping is taking place and everyone even treats it as a lark, with the victim accorded minor celebrity status among Johnny's party crowd. Until Johnny orders Frankie to kill Zach...
Even then it continues. Pick for instance is pissed not that Elvis murdered someone but that he is in trouble for them using his mom's car.
There's also a curious kind of in-universe Values Dissonance in that the plot hinges on a kidnapping, which had a long tradition in the criminal underworld as a (relatively) non-violent way to resolve business disputes. (Look at Tom Hagen's kidnapping in The Godfather.) Johnny and his people are doing something that had been done by gangsters many times before, but didn't stop to consider that grabbing the teenage son of a law-abiding, well-off couple in modern-day Los Angeles might not work out "correctly."