alt Hacker NewsTo single out Meta properties, I'd point to both Instagram and WhatsApp. It was an official policy early on that you could only create a WhatsApp account if it was connected to a "real" cellular number, I think the same has been true about Instagram for a while in that every time I tried to create an account without a cellular number it didn't work. Put in a cellular number and it worked just fine.
Last time I tried to create a throwaway account for facebook it didn't actually ask for my mobile number. Just automatically banned me for being suspicious and then demanded a video of my head with no assurance that would actually help. I generally avoid meta but it seems like most craiglist sales have moved to facebook marketplace.