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You're wrong mate cause buying and selling of this forum account completely encourage spamming of the forum. Automatically buying and selling of account is against the forum rules. ~
I've read before that it is allowed. If you are not convinced, read admin's comment on Bruno's account (RIP).
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In general, giving titles/badges to users who died is difficult/problematic. It's almost a sort of "KYC", since death is inextricably linked to one's physical identity. It also opens several cans of worms: for example, should the account be locked after the person died? If so, it prevents their heirs from accessing PMs or even selling the account (which is allowed). If not, then you'd have users actively posting while wearing "RIP" badges.