Delivery makes a huge difference in whether or not someone accepts that they were in the wrong — if you call someone out in a way that doesn't necessarily position yourself against them or indicate that you think their behavior makes them a bad person, they're more likely to receive it well enough to listen and understand why they got sent to the horny gulag.

It sort of gives people a way of internally saving face a bit so they can correct in the future without having as strong of an emotional reaction as they would if you were to tell them they're being a creep or something. By having a social framework where having the volcel police called on you is relatively common and normal, it doesn't cause people to double down on the inappropriate hornyposting when they get called out. And if they do, having a preestablished set of socially-acceptable ways to tell people their behavior is unwanted makes it easier for more people to join in as well and increase social pressure to stop being a creep.