I don't think so, he could just use a mixer to laundry the bitcoins.
I'm pretty sure he's trying to directly scam some more. He will avoid proper escrow at all cost.
Well there's 2 different possible scenarios here:
1) He wants to scam more, directly from this trade. Won't happen anymore.
2) He needs fiat from these scammed coins. Can still happen if buyer doesn't mind dirty BTC.
Doesn't change the fact that he has done quite a bit of scamming. No mixer was used, the dude is extremely sloppy. Similar how he didn't even fully conceal his email address on a previous scam attempt.