I see this often on Facebook. Lately, on posts about Taylor Swift's wedding. Every news story, people in the comments want to tell everyone how little they care
-
if you truly didn't care, you wouldn't expend the energy it takes to comment on it, you'd just scroll on by. You clearly care about the fact that it's being talked about
-
if it came up on your algorithm, you probably did something to give the impression you were interested in it
-
you're continuing to show the algorithm you're interested in it by leaving a comment. Since you reinforced that you want this type of content, it will continue to appear on your feed!
-
the pages posting these stories benefit from engagement even if it's negative. By leaving comments, you're reinforcing it and causing them to post more of it
On a similar note, why do people follow pages that solely post stuff they don't want? I used to follow this page called Geeky Memes that just posted content to troll the right wing. And, because right-wingers are stupid, a lot of them kept complaining about it and never seemed to catch on that they should just unfollow the page when literally all it posted was stuff to piss them off. This was back when Facebook only showed you posts from pages you were following too, not like now when just anything might pop up on your feed