I feel we will be punished for this.

[haele]

21. Iranian expats are cheering, also some Tehran city folk...

However, the Ayatollahs, Mullahs and the Iranian Republican Guard had significant support in the more rural regions that didn't want to be Westernized. Even in areas where education for both genders was prized, so was sharia as practiced in Iran.
The rural areas preferred what they saw as a social and class protection that a rather strict Islamic structure gave them.
Even if the Iranians aren't as tribal as the Afghans, there's still a significant cultural difference between urban and rural.
There will be civil war. What falls out afterwards will determine what sort of blowback will come from that region.
The primary blowback from this that I see is Orange Julius Caesar now believes he has every right to go into any country he wants to and take down their government. And I'm pretty sure that's going to come around and bite us in the butt big time as various world leaders might want to step in and reduce the threat to their nations.
Just waiting for Putin or his Russian mobster cadre to decide to drop the trap door out from under the GOP and start the wake and fire sale for what is left of the US.