This is true for any service that Meta owns. I experienced something similar on my Meta (formerly Oculus) account. Meta support is very susceptible to social engineering and they have been for some time.
He is talking about Bearblog, the blogging platform that he hosts his website with. Bearblog has it's own discover page and ranking system and every once in a while a post on Bear about AI/tech/whatever will be posted on Hackernews and all of those new people will "upvote" the Bear post and send it to the top of the Bear discover page.