NFL players are young men who make a tremendous amount of money for playing a game. For the most part, they have been star athletes through high school and college. As a result, they are accustomed to being treated like royalty. I don't think it's unfair to say that many have outsized egos and can, at the same time, be terrifically insecure.
Given all of this, it's not the least bit surprising that players who don't get their way (perhaps for the first time in their athletic lives) feel mistreated. There's no question that the Patriots were willing to pay Samuel handsomely for his services; enough that he could have been financially secure for life. He wanted more and that's fine. He's concluded that the team didn't care about him - he's entitled to his feelings but realistically, the only way the team could show him that they did care would have been to give him what he wanted. Anything short of that means they don't care. Okay ...
To think that the Patriots are the only team in the league that has players who feel mistreated is patently absurd. Every single player in the NFL (and all of the other major professional sports) feels that they are worth more than they are being paid. It comes with the territory. Samuel's feelings about the Patriots (as well as those of Law, Milloy and others) prove exactly nothing.
As for Wilfork, let's see how it plays out before we jump to any conclusions. The team has told free agents that nothing is going to happen until February. With the labor/salary cap situation as muddled as it is, this is the only approach that makes sense.
I like Wilfork as a player and he seems like a pretty good guy. I hope he stays around, but if he doesn't, life will go on.