Guy wanted to vent about smart thermostats, explicitly said he doesn’t need advice and got bajillion responses with advice, mostly from FOSS folks who couldn’t contain themselves. I’d be annoyed too.

What do you use Facebook for?

In terms of replacements with somewhat close feature sets there’s Friendica. It’s ActivityPub based like Lemmy and Mastodon. But ultimately it’s usually about people and groups you interact with and they probably won’t be there.