I don’t think Dylan is a lousy singer. He has a very distinctive voice. Was listening to him sing “Lonesome Death of Hattie Carroll” live in England (1964 or 1965) on DVD recently and was blown away with his vocals. I think he is under appreciated as a songwriter because of the fact that his lyrics are pretty deep.
For a professional he was not a good singer; I wanted him to be good but he was, at best, mediocre. The power was always in his songs and that is what I think comes through. “Forget about the dead you left, they will not follow you.”