There won't be a boycott but sooner or later Marvel is going to have it's "Solo" and this might end up being it. Soon as people have someone to garner their anger around. The Marvel version of Katleen Kennedy. I feel bad for the person who will replace him. They will be taking some unfair criticism and also dealing with the fact the movie most likely won't be as good. These movies were very unique from the other Marvel movies and I don't think you can replicate the same feel with a new creator behind it.
Jason
Kennedy has nothing to do with solo underperforming. Most people don't know who she is.