Reddit knows who pays the bills, which is sadly largely r/the_donald and the other alt-right subreddits. I can't find it now, but someone did some poking and found that r/t_d has paid for three years of server costs already. Same thing with Twitter, if they ban anyone shouting hate speech, they lose huge amounts of people, leading to less money from ads. Also, Twitter really likes to verify alt-right people, giving them way more power than they should.
Oh yeah, adview inflation via bots is insanely rampant everywhere and I would imagine GG subreddits would be very fertile ground for that sort of thing as well as being full of folks capable of creating said bots.