This is not a new phenomenon. Fans have always been fickle, me included. I remember Reid signing Niall Quinn and thinking "what a donkey!" Now if someone asks, I would say he's probably one of our beat players in the last 25 years.
Having said that, the difference now is that we're all being taken for mugs by all connected with football: the players, owners, Sky and the Premier League. That's what's annoying everyone so much.
And I don't blame anyone for leaving early. It's not like the old days when players(a few local) tried but just weren't good enough. Now we have players who, in the main, don't give a stuff. Why should you stay and support apathetic, well paid, employees, for that's what they are.
Unfortunately, the days of the football club and the local community having a common bond are long gone. More fool you if you wish to stay and cheer on those who plainly don't care