Initially it's very funny but, as an ex Media Studies teacher, I do find it increasingly odd that we accept the authenticity of these clips. They are, in the main, performances designed to be shared and provoke a reaction. It's always worth asking some "who" and "why" questions. Who filmed this? Why was it filmed? Who is he talking to? Who edited it? Why was it shared online? I'm also concerned about the guy's mental health. Was this consensual or explotative?
That said, as an inept and frustrated guitarist, I can sympathize with the spirit of the clip. There have been a few times when I've got very cross messing up The Surrey With the Fringe on Top yet again, 3/4 of the way through.