MacColl came from the mileu of the depression, the unions and Spanish Civil war. Dylan was from a later generation that initiated the protest against the Vietnam war.
It surely can be no surprise that they did not see eye to eye. In any environment the oldster would regard the youth as callow, opinionated
upstarts.

To my untutored eye the similarities between them are far greater than the differences, it is the different eras that appear to magnify the latter.

MacColl seems a purist - The message was all important. Dylan could deliver a message, be commercial and make money. Both created a legacy, Who wss the greater talent will be argued for decades.