Someone reported your post for self-harm/suicidal tendencies. It's a pest on reddit and is spreading to other social networks as a form of retaliation or disagreement and most of them handle it like dmca requests... better safe than sorry.
Yeah I just got hit by this on one of my reddit accounts. Haven't even posted anything in a few weeks and randomly got this message[1]. Luckily it didn't restrict my account in any way unlike OP and Facebook.
This is the correct answer. It is a group of people reporting the post, not ML, the cause of this problem.
Doubtful. My FB posts are restricted to friends-only, my FB friends are actual people I have more than a cursory meatspace connection with, and the post is over 3 years old. It's improbable that, if one of them wanted to troll me, they would dig that deep — and, tbh, they wouldn't need to.
You’d be surprised what some people are capable of doing.