We don't even have cheerleaders here
I've seen it in a game once! Once in a lifetime, and never reffed a game with 'em, so I never have had to dodge fliping people, rather people walking around on court shooting (in case there are no stands they simply walk on court between quarters and shoot)
And defence shouting, I've been doing it for years when I play, and I let teams do it too. As long as the bench remains seated and simply cheers the own team, let them cheer, no harm done. But a bench calling AIRBALL!!!!, I can't whack the bench, but I would T up the coach for sure