because there are lots of social justice teenage wannabes on it, and they're the ones that take it outside of tumblr
cough kimon cough
plus it's rife with flagrant misinformation ("put your PIN backwards on an ATM to call the police!"), "beautiful cinnamon rolls" that make their followers rip any naysayer apart, a strict black-and-white mentality, and richards who want to sabotage various famous people for literally no reason. (no joke - the XKit guy had wrote a long ass post saying that no, i'm not trying to offend people, sorry, just trying to help everyone etc. the next post was verbatim "lol the xkit guy is trying to backpeddle so hard wowowoowowo")
it also straight up got someone's pet fox killed.