"That's going to be incredibly bad for Iranians as you'll either get a fail-state like Libya, Syria or Somalia (which is what Israel wants) or you'll simply get an American puppet."
Iran is one of the oldest continuing political units in the world, clocking over 2500 years as an organized state.
I think you seriously underestimate the capabilities and know-how of the Iranians by expecting them to behave the same way as pre-state tribal polities like Somalia.
Why do you make comparisons to Libya or Somalia then, if you don't believe that this is going to happen. The defining characteristic of failed states is that central control crumbles and various local warlords step into the void.
Actually I do this a lot, I cite specific examples a, b to indicate a much more general category C that I have in mind. It's the 21st century and plausible that new types of failure-states unlike those seen historically will happen. So it's not necessarily a contradiction the other commenter had.
Iran is one of the oldest continuing political units in the world, clocking over 2500 years as an organized state.
I think you seriously underestimate the capabilities and know-how of the Iranians by expecting them to behave the same way as pre-state tribal polities like Somalia.