How is that a bad assumption? It’s based on history and current events.
It is also a bad tactic to put words in my mouth/presume I assume anything about Iranian businessmen. But it would be safe to say, since you yourself broach the topic, that they would not be in business if they were not obeying the state’s goal of undermining the Great Satan.
Russia would do business with Iran no matter what we do. Such as missiles and other components of war. So long as we remain too weak in the arena of foreign policy to stop them. Canard.
I laid out precisely how it was a bad assumption ,and you ignored those points and launched into tangental issues.