I think generally if you are a well adjusted adult who realises they are playing in a space with people from many different walks of life, including teenagers, you will avoid trouble.

Every time I find myself getting irritated, I step back internally and remind myself it's just a video game and then usually the player in question is a child or someone new or struggling and I move on. If I get really irritated to the point I know I am going to snap, I leave.

"BUT I PAY TO BE HERE" people also pay to use community centers or pools or gyms. That doesn't mean the space isn't public and requires civility.