Your periodic reminder that if you:
a) Dislike long threads and;
b) Follow someone who routinely posts long threads;
that is a YOU problem, which you can solve by unfollowing, and, if need be, blocking that user so they don't show up in your federated timeline.
@pluralistic I have a filter set to block anything with "Long Thread/" in it from my feeds but not when viewing the actual post. That way I can see the start of the thread and choose to read it (usually on your website), and I also see your boosts and other stuff. Win/win