You are welcome to your opinion. The Iranians deserve to worship who they believe in. Not who they are forced to. For a millenium.
They gave the world the oldest monotheistic faith. Yet today they worship a faith of the invader. En masse.
A faith which took from the Christians. Who in turn took from the Jews. Who in turn took from the Zoroastrians, the Mazdayasnis, and the Mithraists.
Can you appreciate the irony?
If the Parsis inter-marry and accept converts, then within a few generations they do not remain Parsi. They die as a people anyways. So that is not a solution. Not even for the liberals.
Not at all. King Vishtasp was the first Persian Emperor to accept Zoroastrianism as the state religion during the life of Zarathushtra. And every Persian from then onward.
That is also how the Greater Persian Empire spread way beyond what is today's Iran, as a Zoroastrian empire.
You cannot split Zoroastrianism from Persians anymore than you can split Hindusim from Indians.