No, its just stupidity. Iran is just another 3rd world, Muslim ideological kleptocracy trying to manage the inherent chaos that is their government and country. They swing between arrogance and fear.
I agree that stupidity is always the default explanation.
Russian guys probably came in...gave four hours of training, and then said if you wanted the advanced training, it’s $4k an hour. No one is going to desire seats on a plane leaving the country...it’ll all be ferry rides out to Qatar, or driving to the north border and riding over by horse.