Plenty. Everything is kinda known, but I talked with him specifically from the standpoint of threat modeling so it turned out to be quite a systemic overview. Hard to tell in one sentence. Practically for Bitcoin traders in the so-called Western world official license is useless, it turns into self-reporting and eventual additional problems, exchanges aren't partners but almost adversarial actors, buyers as well may be scammers or scammer-driven muppets (like very old person with dementia who buys btc for nigerian persona) quite frequently.

He is an officially registered sole trader in Australia and all his banned accounts in Australian banks.