This guy is sending my bullshit detector off the charts.

I'll bet that the story here will turn out to be that he's built a backstory around being Satoshi in either an attempt to get famous, or some fraudulent scheme to profit from it.

On reading the tax stuff, I'm wondering if he's told the Australian Tax authorities that he is Satoshi.

Yeah thinking about it the guys answers seem calculated to imply he's Satoshi which seems something unlikely for the real Satoshi to do. There is also evidence of faked PGP keys https://news.ycombinator.com/item?id=10706511

Top quality cringe.

How can anyone watch this video and not see that it's a braggart looking for some fame?

I don't imagine Satoshi bragging like this douche does.

Absolutely not. Somebody who claims to have "a couple of doctorates" is definitely a phony. Obtaining a doctorate takes 3-4 years, and it is highly unusual to get more than one. Moreover, you would not forget about which ones you obtained.