Oh, Richard! ;-D You are so wrong. And there are literally tens of thousands of highly professional musicians who'll tell you the same thing. I know some of them.

Mind you, you still have a right to your own opinion, and your opinion is that Dylan "can't sing". I've heard that before. What it really means is that he doesn't (and never did) sing in a manner which appeals to your particular musical tastes, and that's about all there is to it.

The same kind of criticism has been thrown at any number of other great musical performers with somewhat unconventional voices, such as Neil Young (who is often a bit off pitch), Leonard Cohen (who himself joked about his vocal limitations when being awarded Vocalist of the Year one time not too long ago), Tom Waites (who sounds fairly dreadful to me...but he sure can write good songs!), Willy Nelson, Buffy Sainte-Marie (with her unusual tremolo on some songs), Bruce Springsteen, etc.

The fact is, they can all sing, and their unique ways of singing have proven to be part of their appeal and their road to success.

You notice Dylan because he did so well. If he was a musical nobody, you wouldn't care.