It was the worst move. We agree.
But I just don't take Betts' word for everything, mostly because I am sick of players saying "I only wanted to play for Team X, and all they had to do was meet my exorbitant asking price." To me, that's not how only wanting one thing works. Just be honest. I'd like to hear a player say "I wanted as much money as possible, because this is my job and, like most people, I work for money. I don't get paid in RBIs."
So far, the only player I have ever heard come close was Torii Hunter, who signed a 5 year $90mill deal with the Angels and said "My grandma said I'd be stupid to turn down that much money."