They been looking at Facebook posts of people they hire for a while. I remember of people already hired that were fired for things they put on Facebook after they were hired.
This is new to me. I wasn’t asked two years ago for my accounts.
I’m also pointing out that AI can keep track of everything you do across the entire internet going as far back as it is saved. I fully expect that some company will offer, for a price, to use the most advanced technologies to do just that for prospective employers.