I half-agree with this meme? A lot of kids can't stay still for that long (they're kids, it's not their fault). I remember 100 years ago when I went to see Revenge of the Sith at a midnight screening, and these parents brought their BABY to the loud, long movie. At one point, I literally saw the mom putting her hand over her crying baby's mouth, and even though I was just a teenager at the time, I wanted to pop that mom right in her fat face for doing that to her child. Apparently these parents couldn't get a sitter, and they were like, "buuutttt, STAR WARS. We need to put that movie before our parental responsibilities!" Fuck those people, tbh.
I've been to movies where kids in the audience have been talkative. They haven't bothered me NEARLY as much as the adult assholes who talk in the movie theater and use their cellphones, though.
Honestly, on opening night for Endgame, I'm more worried about the adults in the audience being obnoxious. I was lucky for Infinity War; the audience was overall very well-behaved. They cheered at only the appropriate moments (and not at every fucking thing in the movie).