Not really sure I see this. Twitter, TikTok, Instagram, YouTube, etc. base their entire business model on the masses creating content. Sure there's a Pareto distribution when it comes to creators vs consumers, but the platforms certainly make money from (and encourage) both.
No, it’s about moderation cost and preventing discussions that can hurt their brand or partners or customers. Also SEO spam whackamole.
Many journalists were open about how they didn’t like how comments would question the data or conclusions in their articles. There were too many heckling comments from the peanut gallery so they closed it entirely.
However the reality is that moderating comments is a pain. Too many people writing the most crazy stuff. It doesn't take many "passionate" commentors to ruin a section. One has to simply browse through Facebook comments on any popular topic.
I’m amazed to have just found out that they’re owned by Amazon (from other comments here). I can’t believe I never realised that.
I guess that the increasingly meaningless ratings and reviews should have been a massive clue…