A “weird fetish” is, quite literally a paraphilia, just like pedophilia. We only care about the latter because it has the potential to hurt people if acted upon. There’s no difference, medically speaking.
A lot of the comments in here seem a little bit too sympathetic.
When you want to solve an issue you need to understand the people having it and have some compassion, which tends to include stuff like defending people who didn’t actually do anything harmful from being grouped with the kind who do act on their urges.