damon and Ellsbury = could have stayed but left to go to NYY for more money = traitors who tarnished their reputation
Boggs = guy the FO decided not to keep = left to NYY simply because they were the ones who were willing to make an offer = just FA doing FA things
I actually feel similar about Rajah Clemens, and would say the same thing if Jon Lester somehow wound up on NYY. Our FO moved on from the guy, who turned out to have some life left in him. If a guy walks when we wanted him and would have compensated him appropriately (not a lowball offer like with Lester), that's one thing, but if we close the door in a guy's face, we have no more claim on him.