A dirty, seven letter word

I was reworking my Masteries, reorganizing them by lane, and I went to label my Support pages and... apparently while I was away from the game Support became a position so hated, is has to be censored. I'm not joking. This might be a joke, but I'm not joking.

"Assassin" was also blocked, but it has "Ass" in it twice so I can kinda wrap my mind around that one, League's naughty word filter's never been superb, but still. Just... why?