Few of them already shared their opinion but I don't think we came up much closer to the conclusion whether he sold his account of not. At least I didn't.

Let's say (for the sake of the argument) that Ratimov indeed sold the account and someone else is controlling it now, wouldn't that person try to go under the radar in order not to be detected? I am asking because that account is allegedly more aggressive than Ratimov used to be (who we know already has anger issues) and that behaviour doesn't make much sense to me from someone who tries to profit from the newly acquired account.

Since I don't speak Russian I can't say whether account changed hands or not, but what lovesmayfamilis wrote makes much sense to me and could explain change in his behaviour.