We're in good company with @codinghorrorJeff Atwood , who says, "threaded discussion is ultimately too complex to survive on the public Internet." way back in 2012 before polarisation and echo-chambers was a thing.
https://blog.codinghorror.com/web-discussions-flat-by-design/

Web Discussions: Flat by Design
It’s been six years since I wrote Discussions: Flat or Threaded? and, despite a bunch of evolution on the web since then, my opinion on this has not fundamentally changed. If anything, my opinion has strengthened based on the observed data: precious few threaded discussion models survive on the
blog.codinghorror.com · Coding Horror
Link author: Jeff Atwood@codinghorror@infosec.exchange