Would they kill the mullas? You have to be ruthless at first to get your point across.
Mullas will be in Switzerland or Costa Rica, living large with their family on their stolen wealth, maybe no longer in the bozo suits and the silly hats.
There are very few Zoroastrians left living in Iran.
I think Nestorian Christians are long extinct.
Given Zoroastrian near extinction and Persian culture mutilation by Islam Zoroastrians would have the motivation but not the numbers.
Today there are probably more Zoroastrians in India and the West then in Iran.