I had the same thing. I was following almost exclusively academics for my job, and yet I still found myself being served up divisive shit about whatever the issue of the day was. Nowadays, I only ever see it when people post links on here, and it's just a cesspit now.
Football threads used to be alright on there. Now it's just a bunch of clueless trolls posting stuff like 'Manchester is Red/Blue' or some variation of 'Messi > Ronaldo' on posts that have nothing to do with them. Just the most banal crap imaginable. The new version of that is '115' on anything related to City, which goes to the top if you've paid for it to. You used to generally find that the top replies had a bit of wit and humour to them.