That's certainly not what I said.
That’s an attitude I have often seen on this forum. Far too often in my view. And that was precisely the statement I was making above. Zoroastrianism was not some moribund religion struggling to survive under the inevitable currents of Christianity at all.
You would need to replicate the long period of conquest by the Arabs that Persia had to make it Christian. As for your list above, a majority of those “conquering” groups came from Persia proper, so I would not call that conquest at all and others were so recent that we can safely discount them.