Seems like the common thing to do for account farmers nowadays... They create accounts in bulk, build them up with minimal quality posts, get as much loan amount as possible, and then walk away.
I'm stuck with 8 accounts right now, some of them are genuine defaults, others are the work of one account farmer....
I always tend to claim an address for defaulted collateral ASAP, and then hold on to the account for 1-2 months... That way i can sign a proper message with a staked address at least one month old + give the buyer the signed message i got when giving the loan, and the buyer is pretty sure no new scam accusations will happen to the account after it's sold to him/her (since i helt on to the account for at least a month after the loan default).