#1 is fallacy, not to mention Hop won't last long even if it had been true as he'll need to learn fast to have/grow thicker skin, especially if he wants to last. Hop left because he knew that his mentor and a guy he practically worshiped did not want to retire in any way, shape or form. JB tried to get the administration to let him stay, but the powers that be said no. Hop knowing this, and immensely struggling on what he believed was forcing JB out against his will, left on that plane, except to Washington instead of Phoenix. But, it's true, that he doesn't know when he's ever coming back again.
#2. Yes, a factor.