I think those are sufficient examples to prove your point. I definitely recall Bin Laden using such references.
Nonetheless, I do think that it is a more contemporary training in how to break down the Western system. How can we guilt the West into giving itself up? They know we feel guilty for the crusades.
I tend to agree with other posters that the Crusades were a response to imperial aggression of the Islamic world. Seizure of Jerusalem was an emphatic point of domination. Further seizures in Europe also demonstrated their aggressive practice.
Our responses continue to be rather tame.
To an extent, I think this is the case. But, as another poster mentioned, they are a deeply dysfunctional culture. While a more sophisticated troublemaker like Bin Laden may understand the psychological akido involved, the average Muslim doesn't. It's a point of humiliation, a symbol of failure, and an excuse to cling to for their lack of success in the modern world. People latch on to that, especially when confronted with two dueling realities.
Those realities being that Islam is the perfect form of government, religion, and society, alongside the fact that Islam creates poverty, tyranny and intellectual stifling wherever it goes. Simply put, Islam is a disaster in practice, and they don't understand why. The crusades, and by extention, the West, is the scapegoat. *Someone* did this to us. *Someone* is out to get us, which is why things aren't going well.
It's not rational, but it's a powerful emotion arguement, and many contemporary Muslims believe it. Granted, many are obsessed with Zionism, as a specific form of Western meddling, but the concept of Crusaders spoiling the Muslim party are at the base of that neurosis. It's a lot more deep seated, culturally speaking, than the more recent concern of Zionism.