When playing tabletop games, it’s understandable that people might not get along. Different people have different ideas of what a game night means. To some people it might be “hey, let’s get some brews and pay half attention to a game.” Others might see it as a focused and quiet experience, while others still might see the game as a background activity to something else, like conversation or watching a movie. It’s reasonable that a group of friends might not agree on exactly what sort of reverence should be put toward a game. As such, when they come into a session or an RPG or board game, they may be more or less focused than others at the table, more or less sober than others or generally doing something that is a pet peeve of someone else without them knowing.
The way around this is to establish some house/table rules when playing tabletop games. Now, your first reaction might be that this sounds too strict. Afterall, they’re just games. That’s definitely fair, and if your group is the type that meets to game once in a blue moon, then by all means, let people run rampant. However, if you are regularly meeting with your gaming group for more adventures in tabletopping, then you’ve gone beyond just games: this is now a hobby and your group is a club of individuals taking part in that hobby. You are a crew. A squad. A gang of nerdy droogs. As such, everyone at the table has some level of passion for the hobby, so it’s reasonable to have a discussion of what sort of parameters the group may need to put in place to ensure nobody’s experience is stifled. It might not be easy, getting people to agree, and then one of two things may need to happen.