Okay, let's talk about blowback.
Blowback from what, exactly?
Al Qaeda wanted us out of Saudi Arabia where we were enforcing the No-Fly Zone over Iraq, as per UN Mandate. Before Desert Storm, Al Qaeda had offered to form an army to push Iraq out of Kuwait. The Kuwaitis turned them down.
So Al Qaeda beef with us was over an act they were willing to do themselves.
The rest of the 1990s the US was engaged in protecting Muslims in Bosnia and Kosovo.
And for this we deserved 9-11?
Let's look at how Al Qaeda conducted itself in Iraq between 2004 and 2008. They backed a child rapist to run their operation against the US. Zarqawi proceed to attack Shiites in order to start a civil war. From 2003 to 2009 AQI forces murdered 115,217 civilians. (
https://www.iraqbodycount.org/database/)
This is a good picture of how Al Qaeda would have conducted operations in Kuwait and in Iraq had they gotten their way in 1991. But this is acceptable because it's Muslim on Muslim mass murder?
Then there's the elephant in the room: US support of Israel. UBL mentioned this specifically in his Fatwa, and it must be pointed out that for all of their bluster - Al Qaeda has never attempted to attack Israel. So while AQ apologists constantly paint our relationship with Israel as a key component of Muslim anti-Americanism, the fact is that Israel is no more than window dressing for them. A sock-puppet issue to rally the feeble minded.
The US is simply dealing with countries drawn arbitrarily on a map after WWI, countries that fell under colonial control of European nations for the better part of a century before we showed up. Why wasn't the UK hit with hijacked planes? They've cast the longest shadow in the region. What about France? Those two countries had more Arab blood on their hands than the US can ever hope to equal with conventional weapons, so why did they get a pass?
That's where blowback as a concept falls apart. Al Qaeda bypassed some true historic villains to the Arab people to attack the United States. The reason why was clearly stated by UBL, but then he changed the goal posts again after we ended our presence in Saudi Arabia...which indicates that Al Qaeda is full of crap. They are nothing more than murdering thugs who spin fairy tales to justify their power grabs and mayhem.
...but somehow we're the bad guys.