What? Can you elaborate? This makes no sense to me.
There's only one device currently produced in the US which can run grapheneos. Grapheneos is the only custom rom which can get even an ounce of attestation.
There are many devices produced which can run iOS.
You were specific. Don't start throwing around insults for reading what you wrote and pointing out it seemed like a weird statement.
There's more than 1 device that run's GrapheneOS so the comment didn't make sense unless adding some extra constraints like where it's produced (which you did). I assumed you were being specific, not just making false statements. My bad.