Where does this come from? You're not the first to insult Pats fans this way, but it has no basis in fact.
Some players who left weren't highly spoken of when they left, not because they left, but because they were dinks. We tried to overlook their dinkhood while they were here, that's all. cough cough moss cough
But this idea that Pats fans crap on all players after they leave is just bogus crap from stir-the-potters.
Who called Cassel a douche? People talk about Bledoe's INTs at critical times, but no one ever called him anything but a stand-up guy. Because he was and is. Chris Slade. Dan Klecko. Givens left and is highly respected. Willie, too. O.T.I.S. David Patten. The list of players who left and are respected is much larger than the few who left and aren''t respected.
Law and Milloy acted like dinks when they left, and are regarded as dinks. Again, not because they left but because they acted like dinks.