Iran is a large country, just getting to Tehran with large-enough force is logistically enormous task.

Complicated by the fact that the logistic convoys can nowadays be trivially decimated by FPVs.

Air superiority is not going to help you much against small dispersed resistance groups with FPVs (ideally fiber optics, so not detectable by emissions from afar).

There is a chance that there will be similar democratization with AA (you will need proper AA missiles, the physics of reaching a fast jet flying high simply demands it), but the distributed passive targeting is made much simpler with current commodity computing and optics.

Achieving AA Denial is difficult, but forcing the attacker to use standoff munitions instead of gravity bombs/close-in air support not so much: shifting the risk of losing an aircraft from 1 in 100000 to 1 in 100 will do it.