Do you have some solid sources on the ground to the contrary?
My professor from my graduate program and his family are all Iranian. It's no surprise that they anti-regime: his wife's uncles were generals in the Shah's army, and were "disappeared" during the Revolution. They've been living in Japan for ~40 years. Hardly indicative of the opinion of the "man on the street" in Tehran, Isfahan, or Mashhad.
Some circles might have only pro-Trump Americans. Others might only have anti-Trump Americans. And yet your experience is all-knowing? With 15 families? Outside of Iran (presumably).