Iran has always known that the US is a higher tech nation, but you should not just expect them to surrender on that basis.
It's meant to avoid conflict altogether, say with China and Taiwan.
That doesn't work when your opponents pray for death and see martyrdom as victory.
This is genuinely how Shia extremists think. They have nothing to lose and will sacrifice everything and everyone for their cause. They don't care about Iran or Iranians or prosperity of the nation.
And frankly that's not how it looks to me.
In such a situation, lots of people would presumably leave the US to form a diaspora. Some of those of course, would have been MAGA people directly culpable in the former illegal power grab by trump.
The Sha was not a loved wise leader, he was also a brutal dictator who directed a Comprador elite at the expense of the majority of the persian people. Some of the Iranian exilees just want to go back to act as colonial administrator for the western world like they did before the revolution.
Even if you consider the Islamic Republic evil, you need to be careful before enthusiastically buying a narrative from one side, because a lot of times politics is just the eternal fight of evil against evil.
Shia is actually way more moderate and compatible with western values. Most terror attacks in the west actually are linked to wahabbism (a more radical sunni variant) than to Shia Islam.