I think you kind of have a point. I had a Palestinian (whatever the fuck that is) classmate in 8th grade when 9/11 happened, and she tried to justify it because she said "Well, they're mad because America took their guns." A lot of Muslims try and justify terror attacks, usually by saying "they're not really Muslim" and just going on a full defensive. But maybe they'll now just see that that's a totally pointless thing to add to the situation and have more empathy for the victims and survivors, whose names are often never remembered, especially compared to the perpetrator.
But realistically, I think they'll just use this as an excuse for the rest of their lives and probably fuel more anti-West hatred.