For what it's worth, the only words Dylan spoke to the audience were to thank Beck, and to say "He's going to be around a long time", something along those lines and very close to it. Dylan played five nights in a row at a small theater in L.A., with a different opener each night. I have no doubt Dylan hand-picked those openers, and that his comment was spoken in complete sincerity. In spite of that, the comment elicited widespread, muted laughter, including mine.
I am well aware of the critical and commercial success of Beck, but I for one don't hear it. I'll concede that it may due to a blindness (deafness?!) on my part. There are a lot of very popular entertainers and entertainers I don't care for, or even vehemently dislike (I don't want to use the "h" word ;-). I didn't like Stevie Ray Vaughan or, after a brief romance, Jimi Hendrix. Yet they are revered by most. I love ABBA and enjoy Shania Twain (for what she is, in spite of the fact that an artist I love, Steve Earle, dismissed her as "the highest paid lap dancer in Nashville". Funny!), many of my colleagues don't. Hey, we don't all have to like and even love exactly the same things!
