If I got offered to be on a team where I could be first option vs 3rd, I would take that. My personality would want to be top dog.
Same in the real world, if a company wanted me and offered me less money to be third on the chain of command vs leaving for a company who would put me at the top and on top of this, offer me more money, I would leave and take that bigger role. Once again, this is my personality. Just the same, if at my current place, they brought in 2 people higher than me and I was moved down the chain, I would leave as well for a bigger opportunity.
It is hard to fault anyone. This is not simply about money. It is about being somewhere you can have a larger role. For some people, winning is not everything but rather personal worth and what you want in a role is the most important thing.
Good for Gordon, as top dog, he should be back in the 20's. I hope he has a great season. i do not fault him for his choices but of course as a fan, I wish his desire for winning the finals outranked his desire for more responsibility but that is just not a realistic expectation from me.