Are you establishing what would be your criteria for his? I would be like you are describing but coaches leave or turn down higher profile jobs all the time.
Some do it for family like Paul Christ at WIS, the guy lives in the same house he grew up in Madison. The NFL took shots at Bill Snider at K State and he wasn't leaving for any money or fame. The guys that did, Pepper Rogers, Petrino, Saban and Spurrier decided that wasn't for them. Tom Herman went big time to UT, I wonder how many times he wishes he were back in HOU?
I think Moore has decided the NFL is for him. He got his first chance with the Cowboys and then some so it stands to reason where his loyalty would lie and if this HC from the O side wants him to stay and he has decided at least for now that the NFL is where he wants to be, I agree, this is the job for him.
But I would not have faulted him or considered him not smart if he returned to his part of the country because compared to Washington, Dallas is butt ugly. Different strokes.