How do you know that Morgan did not find Hearst too irksome to work with?

Answer 1

Hearst did everything asked and at the end completed everything.

Answer 2

It is unclear whether Morgan found Hearst irksome to work with, as personal feelings are subjective and not always transparent. However, their business partnership and collaboration suggest that Morgan was able to set aside any interpersonal issues for the sake of their professional endeavors.