I was surprised to see it when i was scrolling through to get the thumbs up. I don’t think I’ll ever be using it, but if it’s against the rules I think it should be removed. The curse filter ensures that I don’t break the rules, and it’s on me if i choose to bypass the filter. This FU emoticon isn’t a filter bypass.
Just can’t. Same reason you can’t use the abbreviation for wild turkey federation. It’s a filter bypass. If I had the ability, I’d remove it, but I don’t, so we just ban those who use it.