His dad co-founded
an Islamist party in Turkey. His dad is also a billionaire and a landlord. To be fair, while they are Islamist, apparently they are on the more moderate side (I don't know much about Turkish politics other than the AK party has had solid control for most of my life and that there's no chance of a secular military coup at this point (which has saved Turkey from Islamists in the past).
There was a clip recently where Hasan was reacting to a clip of Ethan talking about his dad. Ethan said that he was the founder of "one of Turkey biggest military parties" or something like that and Hasan did his classic "whaaaa...." thing and repeated "military party?" It was very obvious that he was latching onto Ethan's very obvious misspeak (he clearly meant "political", not "military" since there are no military parties) to try to downplay the fact that Ethan was correct (they aren't really that big, having 2 out of 600 seats, but even having representation in the national parliament within 5 years of being founded is noteworthy) on the substance.
This post goes more into detail