One key claim is "they both liked gambling, Bitcoin 0.1 had a poker client in it". Beyond the obvious problem that lots of people like poker, this claim is nonsense. None of the versions of Bitcoin I've ever seen had a poker client in them. It's not even clear what that would mean - you can't implement (mental) poker with Bitcoin Script. And I don't recall Satoshi ever commenting on gambling one way or another.
Another claim is that they both knew C++. Let's assume for a moment that TrueCrypt was written by Paul le Roux (I don't know the backstory). I downloaded the TrueCrypt code and had a look at it.
The TrueCrypt code doesn't share the same rather distinctive coding style Satoshi used. Bitcoin was rare for all kinds of reasons, but one rather obscure reason is that he used a simplified variant of Hungarian notation and only wrote code for Windows. The TrueCrypt code doesn't share this quirk, but it does have a different formatting quirk that I haven't seen before (there's always a space after a function name and the argument list in invocations). Satoshi didn't use that style either. Styles can be pretty distinctive, and I've never seen one that exactly matched Bitcoin's. So it looks to me like these codebases were written by different people.
The other bits of "evidence" are all circumstantial and frequently absurd. The entire thing traces back to Craig Wright, which isn't a good sign.