The point is, as Molesworth points out, the patents were only brought up to prove that such a person exists at least so far as the US Patent Office is concerned. The validity of the patents, at this point, don't enter into it. They exist, ergo the person might reasonably be assumed to exist. However, that they exist, and he exists, doesn't prove he's the guy in the video. No one is claiming that they prove his idea has merit.
"Now everyone was giving her that kind of look UFOlogists get when they suddenly say, 'Hey, if you shade your eyes you can see it is just a flock of geese after all.'"
"You can't erase icing."
"I can't believe it doesn't work! I found it on the internet, man!"