The person in the video is playing Russian Roulette with a motorcycle. However, it's actually worse than using a revolver. With the revolver he will only hurt himself. With the bike, there's more at stake than his own ass.
The video or the GPS maximum mph reading won't stand up in court as the burden of proof is on the prosecution to state unequivocally that you were the one riding at the time of the readings. I know that the GPS does not record the date at the time of the maximum mph reading. The video may or may not, I don't know. If it does, the arresting officer must substantiate the recorded time and date of the video with his observation of the accused actually being the rider at that time and place.
I've ridden every bike I've ever owned at its maximum speed from time to time. But never in anything that even hints at being in a populated area, only in the middle of nowhere with no one else on the road. This squid is making us all look bad and then he posts the evidence on the Internet to magnify the harm he's doing. I doubt that this clown will ever reach half my age.