It's interesting that I *don't* feel like my feed has been taken over by the 100-opinions threads (though my mentions have). I think because I follow enough people who are naturally quite active. The people who are feeling firehosed I suspect follow mainly within a small world.
I mostly follow the people doing the threads so I see them directly, but <75 people are doing threads at the moment and I follow over 1000 people, most of them pretty active