The only comments section I have recently seen that were filled with thought provoking, insightful comments and/or constructive criticism were the New York Times and the Athletic. It's no coincidence that both require me to pay to subscribe and get access to them.
I'd like to see even more fine grained controls for comments on posts for social media. Facebook should emulate what Twitter has done and let me maintain an "Allow List" of friends that are allowed to comment on my posts, links, etc. The friends system was originally designed the way it was because you weren't supposed to open your Facebook friends to everyone, but 15+ years and the shifting of connections that time brings (good friends may now just be acquaintances) makes this feature a necessity.