If it was a live performance that was crappy, I would have a little more compassion for him. But this was a video that he made and must have watched and should have realized wasn't well done. If I was making a video to show my playing to the world, and I played that badly in it, I would do the video over or not send one in at all. I mean, this isn't school. He doesn't HAVE to send in the video to get a grade.
If he can't handle playing a lot of notes or trying to change keys randomly, he could have made a simpler solo and done it correctly. It wouldn't be as fancy and show-offish, but a lot of great solos aren't very complicated. I would always rather see something simple that is well-done rather than something that is too complicated for the player to handle.
And really, if you're trying to get better at something in the arts, you need honesty from people. If everyone blows smoke up your ass all the time, you never improve and you end up thinking you're awesome and ultimately end up embarassing yourself very badly.