Preface: I don't think this resolves the issue completely by any means.
It's seemed clear to me for awhile that Github discussions need threading, badly. The 200 comments on one of those issues probably amounts to about 40 actual discussion topics. Many of them are the original poster adding follow-up comments to their original comment, or back-and-forth discussions about one single comment. It's especially noticeable on contentious discussion topics.
Basic conversation threads wouldn't completely alleviate the problem--200 threads is much better than 1000 comments, but probably still an intractable amount for the maintainers. Still, it might mean you're able to scan 75% of the discussion instead of 25%.