Interesting comment: "if Iran ends up responsible for regime change in the US, i will be overjoyed as i die from irony"

And it is more than likely. US and Iran probably can’t defeat each other militarily (us obviously can, but it requires full scale ground invasion which is not even contemplated at the moment). And both can’t back out of the conflict. So the likely outcome is that the conflict escalates until one of the regimes snaps and it becomes to somehow politically possible to back out.

Collapse of the regime in Iran seems unlikely at the moment because it’s hard and zealous dictatorship with unlimited power and will for violence within the country. In the US OTOH the elections are coming. An administration that started a stupid and absolutely preventable war and then effectively lost faces quite a challenge there despite everything else. This seems like a perfect moment for Iran to create a deterrent for US: attacking us ends your presidency.