My source was a refugee friend, who’s relatives still live there near the Russian border. There was an influx of Mullahs into Iran that only spoke Arabic, brought in by Khomeini. My friend is a Muslim in name only. A MINO? he was educated here an married to a catholic? He got out shortly after the Mullahs took over.
He is a source of one in the world. I’d take it with a grain of salt. If the situation was truly as he said, there would have been dozens of investigative reports about it, way back when, and continued comments on them today. But there has been zip, other than you friend. Personally I don’t buy it one bit. There is far too much religious difference and religious animosity between the Shia and the Wahabi.
How do you know those Mullahs were Wahhais? They could well be Shiites from Iraq or Lebanon.