Are you even allowed to have github or Gmail accounts? From my understanding those are US companies and not allowed to provide any services to Iranian nationals.
He does have a LinkedIn, and his GH user has a real looking GitHub pages site associated with it.
Please don't violate US Treasury dep sanctions just to be a founder for a business with 0 customer validation, you might as well be helping a Nigerian prince.
Seek counsel with a lawyer versed on this first, rather than the HN comments section or your own exuberance.
A better analogy would be the "Trade Offer" meme where someone offers a share of the profits, but your offer is that you are willing to violate serious international sanctions.
You: Can bypass US Treasury sanctions and open a Stripe account