If you have some doubts on that Account have changed hands maybe let him signe a Message from his staked Bitcoin Address 1BB9DFaogLnSWGomhbHvvpBrmryNCev9Y8
OK, I would accept that as proof it still belongs to the original owner. However, I don't like to ask things of people. If he sees the tag and clicks the reference, then he'll probably see BTC address mentioned. I'm 100% sure the account belongs to a new owner, however, which is why they won't respond in this thread.
Tagg someone only that he has changed his posting style about without any proof is a bit harsh for my opinion.
Its just a neutral tag... When accounts go from smart to dumb that is enough proof for a neutral according to my own standards.