Does he really, or does he employ people who have this knowledge?

Even giving him the biggest possible benefit of the doubt, ignoring his politics, and ignoring just about everything else negative about him… so many of his projects miss their announced release dates with little to no technical discussion/disclosure on why.

On top of that, we only need to look at his short lived attempt to style himself as a particularly skilled gamer. If he was so clearly lying and cheating (by using an account built by someone else) on something that inconsequential, it should cast significant doubt on his other claimed skills and accomplishments (if none of his other shit caused that doubt for you yet).