I'm sorry but it's BS.
This for example:
Is no worse than bouncy bits gifs, yet not a word is said about that video/it wasn't removed.
You either have a hard and fast rule of 'family friendly forum' and stick to it or you don't, but you don't have varying standards across all forums otherwise you just end up with some odd moderated areas and others aren't and what appears to be double standards.
Send a message to one of the moderating team outlining your frustrations - they'll be perfectly happy to read it.