Re: I know it's possible to have fun ...
Indeed, though it can also detract from fun if someone is swearing unpleasantly.
Not-swearing can also contribute to fun. Devising words to get around a filter, sharing a joke of pink marshmallows substituted by a filter, and a collective shaking of heads at the idiocy of a filter, can contribute positively to a community.
The shared joke or the common enemy bring people together.