I don't know, I only have an instagram account so I can open posts/pics that sometimes are linked on a blog or website, and to look at that one cat account I follow when I log in once in a blue moon. No post of my own, no phone app. I don't believe Meta knows a lot on me just via that. I wouldn't want to lose the account just because I refuse Threads' business model though.
Yeah. I saw someone on a Discord say there was a ferret at their pride and everyone cheered over how cute that was. Made me sad about the little dude leashed among hundreds of people all moving and being loud.