The way you put it, It looks like Al Queda had a noble goal. It's a shame that they did not win then.
But I am more cynical than that, I don't believe in the idealistic goals of these organisations. In my opinion, all local warlords fight for power, glory and spreading their influence.
Looking at the final situation, I would say that they achieved exactly that. Globalism is dead, the liberal culture of the west is significantly degraded thus cementing their influence in the region. Their power is now much less contested and they can rule happily thereafter.
Maybe let me try again - terrorist group says their goal is X. Terrorist group fails to achieve goal X. Therefore, terrorists didn't "win", by their own definition of winning.
Is that less.....offensive?
So I don't mean to misread you. I think our society as it stood was a lot more noble than the Taliban. In some ways it still is. They have brought us down a bit toward their level, and that's something worth fighting against.
Denying this is closing your eyes to some major problems and as long as you deny something you are categorically unable to fix it.
The increased polarization in the United States is a product of the end in the mid-1990s of the overlapping pair of partisan realignments starting just before WWII and a return to the normal condition encouraged by the US electoral structure of a strong, stable, sharp partisan divide, combined with modern mass media technology.
The 2001 terror attacks are coincidental, not a cause.
Denying this is closing your eyes to major structural problems with the political system in the United States and, as long as you deny something, you are categorically unable to fix it.
We agree that this was already happening prior to 2001, but I simply doubt it would have resulted in the extreme situation that we have today. Social media, similarly is an accelerator, not a cause.
Speaking specifically of 9/11, no, not really. Bin Laden's stated goal was to commit such a crime on American soil that every average American will have to look up Al Queda, find out why they attacked America, and in the process discover all the attrocities comitted by American military and then finally and hopefully turn against their own government.
Obviously, none of the above happened - American government used the attacks as a pretext to spend another trillion dollars on a pointless war that killed hundreds of thousands of people, and then used them again at home to remove private liberties and introduce laws that would have had no chance otherwise. I'd argue the average American never bothered looking up why US was attacked beyond a "brown people hate freedom brrrrrrrrrr" nonsense.
So no, terrorists didn't win. They failed at their stated goals miserably, but the world's population still lost as the noose of global surveilence is getting tighter and tighter every year.