I encounter people taking pictures, making video calls, and recording insta/tiktok/whatever videos in the gym changing room all the god damned time. I keep tell

I encounter people taking pictures, making video calls, and recording insta/tiktok/whatever videos in the gym changing room all the god damned time. I keep telling people to stop, but not once has anyone responded with "oh sorry". A belligerent "why?" is the most polite response I've received.