But what that is important is the red feedback that he has received. That is enough.
The red feedback will discourage others from doing the same with a reputed account.
Account sellers or buyers are not too stupid and they don't use their main accounts as Hero or Legendary to deal with account sales or purchases.
Like this case, it's a newbie account and red tags don't harm the person anything as only a useless newbie account becomes more uselesss, but nothing more severe than that.
It's common to see people who run such business creating new accounts for making threads, sending PMs because they know what they will get later by forum moderators or community members (red tags).