Of course, they will. No one is punishing the user. The flags and negative tags only serve as a warning to other members not to trust or use anything the account posts until it's back in its rightful hands.
That's what I also thought and I also believe that if harizen gets access to his account once again and comes makes a thread from his own account in reputation board or at least make a simple post here by confirming that he has got access to his account and he's the one handling the account then I believe that the ones who left those tags will have no hesitation in removing those from his profile.
The best course of action as far as proving account ownership is concerned is for the member to at least stake a bitcoin address. That way, if the worst should happen and the forum account is compromised, it should be relatively easy to sign a message and have access to the account returned. If becomes a different scenario if the computer was attacked because there is a possibility the wallet information (as well as BTC balances) could have been compromised.
Definitely if an hacker can get access to someone's system then they can do all sort of such things with that person, but the accounts of the forum can be logged in remotely if the hackers somehow gets knowledge about the e-mail and password of the account. But, yeah if the whole system of a user a compromised then surely the hacker can see the wallet information and in that case he will be able to steal the balances of the user easily. I thing a user who's well aware about wallet security will not save his/her wallet information on a internet connected device but surely most people don't care about hackers and that's one of the cause of them being hacked.
I also noted the OP has not been online for over a month using either of his two known accounts but that does not mean he has not created a new account. Maybe he is already back and would like to keep the new account private and not associate it with his past. I cannot recall interacting with the OP but if he does get access to his banned/stolen account granted, I hope the tags will be removed.
I doubt that he even needs to create a new account because a new account won't be helpful for him as ranking up a new account and making that many posts as the OP has made isn't an easy task. The @OP has more than 16k posts on his original account and it would take him at least 2-4 years to make that many posts or even get to a rank like that. However, I totally agree with you that one the user gets access to his account then those reputed members of the forum will surely remove their tags.