MacColl's attitude to Dylan was a defensive one and was shared by many others, Lloyd included, in his quiet way
When Lomax visited Britain in the fifties he found a bunch of singers, Ewan and Bert included, singing American songs in phony American accents.   
He remonstrated with them and pointed out the importance of keeping alive their native traditions
With the help of the BBC mopping up campaign of collecting, the situation was turned around - English and Scots singers started to sing English and Scots songs.
Dylan's appearance on the scene gave rise to a #whole batch of Dylan-Doublers and Joanie clones, in my opinion, even a step down from the previous Woodie-Warblers and Huddie-Howlers.
MacColl, Seeger, Bert and others fought the Mid-Atlantic Americanese and dedicated their lives to the exploration of the British and Irish repertoires - Dylan just happened to get in the firing line.
Given the encouragement Ewan gave people like me to develop a lifelong interest in the traditions of these islands, I can forgive his occasional intolerances and excesses.
In the twenty of years I knew Ewan, I never once heard him attack a fellow performer publicly - I can think of plenty who chose to attack him and those who worked with him - those attacks continue over a quarter f a century after his death.
And people squeal about analytical criticism of Bobbie - Come -onnnnn!!
Jim Carroll