Not really, but it seems like Twitter's recommendation engine tends to skew to a few hundred accounts/topics that I interact with the most. If something like 10

Not really, but it seems like Twitter's recommendation engine tends to skew to a few hundred accounts/topics that I interact with the most. If something like 10-15% of accounts I follow just stopped posting, I wouldn't even notice (in fact, that might be the case!). It doesn't seem any less active than it did before Musk took over. The big change since he took over is that now I have to block a dozen or so people every day who are just on the opposite end of who I would ever want to interact with. Not just politically, but people actively seeking to be harmful to others in one way or another. Before that, I went 14 years of using Twitter daily and had only blocked a few spam accounts.