Was there a hack back in October 2017 or thereabouts? I've been seeing quite a number of accounts with gaps in posting from months to years ago, and ending in 10/2017. You can tell the accounts are not being controlled by the original owner because of drastic changes in posting style and/or language.
The ones I've seen are now doing bounties and are shitposting in the altcoin section. I did tag some of the ones I found, but I'm sure there are many more.
I think you're right and to be honest, given the first reply above, I've lost motivation (a la I don't care). As for the PGP Signed Message with Bitcoin? really? I'll just use this account LOL.
I was just trying to clean up. You'd think there would be an easier automated process like the rest of the world.