I hope he’s OK, of course, but I wouldn’t put a lot of stock in someone abandoning their FB page. I check mine about twice a year and maybe reply to a DM or two but I haven’t posted in years. FB is just a place for people to post pictures of their dogs and ramblings about politics. Twitter, on the other hand, is a place where people post pictures of their dogs or cats, ramble about politics and post about sports. Which makes it slightly superior.