Yeah - not cool at all.
I was on swim teams growing up and in high school we had a strict rule in the communal shower. That’s all we had - just a big square room with like 15 shower heads. There were some shower heads along the outside wall in a kind of hallway around the main room but they never worked. Anyway, one rule - speedos/swimsuits stay on in the shower except for brief cleaning needs. Not a hard rule to follow.
So this one freshman comes in after first practice with a towel around his waist and loosens it and he’s buck naked. The 7 of us in there already let him hear it. He actually did it a few more times before the bullying worked.
It was maybe no surprise. His dad was our family dentist and I always thought he was creepy - as did my mom.
Without rules, there’s anarchy (and creepiness)