Reddit's censorship usually comes in waves following bad press (most users don't care, and the ones that do don't have to go to offensive subreddits, but the press can't resist clickbaity headlines!) and the fear that the bad press will scare away advertisers and whatever new messed up scheme the site is thinking about to make money off the content the internet provides for them at no cost.
Fewer advertisers than users? I think they know they'll lose users, but new users are coming in all the time and so every time they push the site father into restrictive censorship a group comes in who never knew it was anything else.
