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.
Broken Base: Fan opinion on episode 7 is split. Some feel that the drama is unnecessary, and that Rikka doesn't need a psychological reason to behave the way she does. Others like the depth and development that it brings her character, as well as the show itself.
In episode 11, Yuuta became one, thanks to a combination of forcing Rikka to give up her chuunibyou ways (to the point of trying to forcably rip the eyepatch off of her) and seeming completely oblivious to how miserable she is when she does give it up.
Except he's not oblivious to it at all. He knows how much pain Rikka's going through and is even angsting about how guilty he feels about his actions. He just isn't willing to let himself reassure her because he feels it would be irresponsible and go back on his previous actions.
The finale of the second season has already become this. A large chunk of the audience hates that they spend the whole season building up to a Big Damn Kiss only to have it NOT happen at the very end. Typical for Kyoto Ani, but reeks of a cop-out.
So much so that they end up accidently kissing in the bonus OVA.
Dekomori's response to Rikka saying she's in love with Yuuta in episode 10 can be seen as this, completely with Murder the Hypotenuse (she snapped out of it fast and helped to give her "master" confidence to confess to Yuuta).