What difference at this point does it make?
None.
If you read this article, it concludes to be a hoax, an example of postwar Soviet propaganda sowing confusion into allied intelligence.
The more truth about past government intrigues and lies, the more it deters people today from the same thing. And also lets us tailor the modern spy world so we know better how to control them and the ones that should be disbanded.
The people who protected him and the secret seem fair game to me.
You hid Hitler? Bullet time.