The reason that past Presidents from Reagan to Biden (and Trump v. 1.0) have not decapitated Iranian leadership or military capabilities haven't really been because we lacked the ability to effectively use air power to attack them, but because the consequences of doing so are wildly uncontrollable.

That isn't the only reason. Some Presidents decided that Iran could be contained (Reagan, Bush41). Others sought to appease Iran (Obama, Biden). Still others didn't want to overextend by taking on Iran and others likely overestimated their capabilities (Bush43).

Moreso if you only use air power and don't actually invade with ground troops, which would likely be a necessary (though as Iraq has taught us not sufficient) condition for being able to control developments in the country.

Iraq isn't Iran. Far from it. It's amazing to me how people are missing this.
There won't be an "invasion" the way some people seem to think, with 500k troops rolling in. No, any "boots on the ground" are likely to be Green Berets working with Mossad types to identify locals who want to work with us.

I've already seen video of a bunch of IRGC thugs on motorcycles being hit with a roadside bomb and blown to smithereens. Ironic, no?

Adjust your thinking here: In the case of Iran, the US would create/aid the insurgency. Not be the focus of it. Big difference, yes?.

And if the Mullahs are busy trying to stay in power, how much ability do they have to project power outside of their borders? Is it the same or does it go down?

I think it was a foolhardy move to attack Iran like this, and that doesn't really change simply because the attack was well executed.

That's not surprising. But thanks for taking care of the earlier gripe about ""poor planning"". Great execution is a function good planning.
As I've told you, it's a part of a larger plan with China as the goal. When, not if you dispute that you should ask yourself how many of their main ally pool of Russia/North Korea/Cuba/South Africa/Venezuela/Iran are still fairly healthy. Then once you've crossed 2 of those off your list you might ask yourself how well Chinese equipment is performing.

Then you might ask yourself who gets hurt a lot if Iran lashes out and manages to close the straits of Hormuz. And then you might ask yourself where the country that's being hurt by this would go for a backup. And then you might ask yourself a few more questions...like, what is that country going to do if that backup isn't there.

Or you might not.