I wouldn't call him rude. I saw him only two times and both times his behaviour was the same: You could call it shy. One has to know that he doesn't speak to the audience, period. He never did. When he says something at the end of the show, it is sensational and will end up on YouTube. He never smiles and hardly interacts with his band. On my first show the first thing he did was spitting right in front of the audience, it was Open Air and there was some green between him and the audience, and I thought, wow, what a good thing to start a show with. He never took off his sunglaces and ... did a pretty good rocking show! The set was great, the band was tight and the audience was really screaming.
Then, a few years later in Bremen inside the Stadthalle, the show was also good, loud, but good. His band is great. After 15 minutes of taking scary looks at the Boss his guitar player suddenly adressed a relieved smile to the drummer, you could see what he was thinking, Hey, he is in a good mood tonight...
So do not expect a warm, friendly man on stage that shares some good feelings with you. He is just doing what he does for the last five decades.. I personally think he is addicted to it and has no idea what to do instead. Somebody should have said to him that his voice is really impertinent and could not possibly be called a singing voice.
Al that said, to see Mark together with Bob Dylan, his great idol, on stage, is worth the effort. This will be historical in the sense of remarkable things in MK' career, in whatever way you see it, and I want to witness it. Honestly said, I cannot see how Mark with his high standards will be able to put a show up together with Bob Dylan, with this sound, this racket sometimes, and this voice. The only way I can imagine would be both seated with acoustics. But then again, Dylan doesn't play the guitar anymore.
LE