They have a small issue with power creep of their bad guys. First season was a demigorgon that they barely beat. Second season was a million of them, plus a mind flayer that they barely beat. If season 3 is a million mind flayers plus an even badder asser boss, it's going to be a little ridiculous.
Max's brother is definitely a peter puffer.
Max/Lucas kiss. Since I am basically the same age RL as those kids (I would have been around 10-12 when this story is set), my experience seems relevant. I had a cousin who was disowned by my uncle for kissing a black boy (he was divorced so he just sent her back to her mom and didn't see her for years). All of us cousins were pretty shocked that she was in trouble since she'd had boyfriends and kissed them before. We didn't understand the big deal but our parents were still pretty racist in the 80's.
The 8 episode sucked, I'm glad it was a one off. When she showed up and killed the demidogs later I realized it had to have been an empire/jedi homage. catatonic mama = ghost of OB1, Chicago = dagobah, 8 = yoda, the dude they punished = vader in the haunted cave, and of course "My friends are in danger I must go to them" = "My friends are in danger I must go to them". SO the whole episode was a training montage.