Since the post mentioned newbie, I think the emphasis is on forum account and like you said, scammers or hackers will have no interest in a newbie account but higher levels of forum accounts.
They can hack accounts individually or hack accounts in batch by exploiting security holes of the forum. It happened three times in bitcointalk forum history in 2011, 2013 and 2015.
Bitcointalk history of hacks and vandalism.Newbies and low rank accounts are less helpful for hackers or buyers of hacked accounts, but they can use any account they have for fraudulent activities in the forum. They don't lose anything by using hacked accounts.