When a bank fails, everyone who borrowed from the bank doesn't suddenly not have to pay their debts anymore. There is no reason why Hhampuz would not need to repay what he owes BestMixer
And I don't see BestMixer starting a thread in this forum section accusing Hhampuz of embezzling funds. No arrests have been made so it's not like they can't spend a minute (or an hour, I don't know about their OPSEC) to create a thread. I also don't see anyone, DT or not, red-tagging Hhampuz, so it seems the consensus is that he isn't a scammer.