They all do same retweets and tweets same time. And have low (4%) audit.
This is not enough proof that the accounts are connected. However we can get this conclusion that the user(s) operating them may be from the same time zones. But this does not confirm that the owners are the same person.
My guess is that these people are begshit third world shitposters who are found writing one-liners in the Bounties section of the forum.
They certainly have different ETH wallets , but it's enough to look at 2 any accounts and everything is immediately visible, these are probably automated multi-accounts.
If they have different wallets and no substancial proof that the wallets are connected then they will not be tagged by DT2 members.
That is best proof if not backed by other proofs. You might want to look into the post of these BCT profiles that own these accounts. That may reveal som "juicy" info.
If you agree with me and you bounty manager - will cancel all there stakes at the end so that his effort will be wasted!
If you can prove that the accounts are connected then definitely and will be neg tagged to prevent them from abusing any other campaign, otherwise not.