Not so stupid, this scam - much easier than the similar triangle-scam in online marketplaces. The thief definitvely stays anonymous.
The question is more, what happens if someone falls for a scam and sends money via SEPA - can he get it back?
1) the receiver could be taken to trial, if he is the scammer. Then the chances are good.
2) if the receiver is an innocent guy who sent away his bitcoins, then there was no contract between the sender and the receiver. But sent is sent - and as the receiver is not the scammer, he did not perform anything illegal. I would say, the sender is then the unlucky one. Otherwise anybody could request sent money back easily.
In Germany localbitcoins.com is blocked, therefore no risk here. But probably also possible via decentralized exchange Bisq?
Disagree - localbitcoins is accessable in Germany (just tested it).