I can’t see any reason for me to ever try it. I’ve got plenty of social media to deal with already, and this doesn’t seem to be offering anything new or interesting for me. Plus the creepy permissions even keep me away from joining temporarily out of any curiosity I might have.
I don’t know anything about the number of users they’re expecting to have with this, but I’ll be very surprised if it’s a significant number. I just don’t get why anyone would want to join it, not only for what it is, but also for the whole facebook/meta nonsense. But I suppose some folks still actively and frequently use Facebook, so what do I know!