Edit: And interestingly, all of the accounts I tagged are in different bounties. There's no overlap whatsoever, as if the owner of the alts was deliberately trying not to register two accounts in the same bounty. I'd also like this guy to list which accounts are his and which are not.
If there are constantly joining bounty campaigns, and there is absolutely no overlap whatsoever, then that is quite the red flag. A puppeteer who is trying hard not to get busted.