--snip--
Well, that scammer's reputation is already ruined and with such reputation even applying a signature of scam website won't help him/her much.
I somewhat disagree. User
Velkro used to wear signature about scam vanity address website for almost a decade while frequently post on "Beginners & Help" board.
Banning accounts of such scammers is going to put so much burden on the shoulders of the admins/moderators and even with bans they can still create new accounts and find ways to continue their old habits.
Do you you clarify how banning account is going to put so much burden? Do you mean reviewing the proof or something else?
this scammer have four accounts.
Firstly I didn't bother opening the link. Users here will easily consider you an alt. If there is concrete evidence that a person breaks the forum rules resulting a ban penalty then eventually he'll be banned.
OP present it in lazy way, so it's not surprising many member won't even look at it. But aside from what OP said, user "coaltin" also created many spam/AI generated posts where i reported some of them. Here's an example where all of them deleted by moderator, It should be another reason for moderator to consider permanent ban.