Eh, if I knew it was permitted going in, that’s on me. If it’s a new movie and there’s no notice that they’ll allow that behavior, and they allow some guests to be loud and obnoxious for the whole showing, I wouldn’t go back to that theater unless I heard things changed. That was more than enough to avoid teenagers being insufferable at Friday night horror films when I was growing up. Some of them allowed it, and they had ongoing problems with teenagers being little monsters (breaking stuff, causing fights, bothering other patrons outside the theaters, etc), and gained reputations for being dumps not worth going to. Others required teenagers to be accompanied by parents, to control them a bit and shame them into behaving. Others just didn’t indulge in it at all, and would just straight up kick out disruptive people.

I’d prefer more places had a system like Alamo Drafthouse’s, where they post on the site when it’s going to be a screening with audience participation, or a children’s screening, or whatever. Everyone is free to choose the sort of screening they want to attend, and those who opt for a quiet theater experience without some muppet feeling the need to scream “Oh no! He’s gonna get you bitch, run!” or similarly obvious outbursts, don’t have to put up with it.

Honestly, 9/10, I find the people shouting and carrying on really only add something to the experience for the friends that went with them and find them funny. Save that for when you’re watching at home with them, or when there’s a screening that explicitly allows it.