I don`t know, i never interested in it. I don`t recommend anybody to buy or sell accounts, but if someone wants to stop gambling - it may be a good decision for him - he break his past with selling it.
I don`t believe that it can help, but may be someone need something like symbol that there is no way to his old habits.
It would be good if someone decided to end their experience with excessive gambling that had harmed them. I agree with you that a complete break from gambling platforms would also be good evidence that the person will never want to return to his behavioral addiction again.
But this cannot be an argument to justify the same person selling his accounts on those platforms he used to use. Giving up gambling will not eliminate the fact that these accounts contain important personal information, even if it can be changed. This is a very dangerous step that could lead to undesirable or dangerous results that may include criminal prosecution if the buyer misuses the account and the platform is forced to use criminal prosecution.
You`re right, someone who ready to buy it 100% has some problems with casino or wants to cheat it. The best way is to delete account. But someone can choose such a way to get some money back and to know that his gambling helps someone else. It is strange logic but i think that it is possible. When i change casino, i just leave account without money or delete it.