They have to protect the thots who post their porn so the loser simps can buy reddit gold to give to the posts. That's why they're not banning it. It makes them money.
Edit: You're downvoting me, even though you know I'm right.
I was suspended for 7 days for saying a comedian was "retarded".
Then over a year later I was permanently suspended for saying that a bunch of rich scientists that someone was talking about were "a bunch of insufferable cunts".
If only I'd said those things about Trump, I'd still be on there....