Oh, it's been pretty crap for a while now. I constantly see viewers complain about AIDS ads and even content creators feel poorly about them.
Looking at https://twitchtracker.com/statistics shows a relatively flat viewership base. Since January, they've seen a decrease of close to 15% viewers and concurrent channels. It appears that they had a large increase in viewers and channels in 2020, probably due to Covid, and since then they have been in decline.