I know many designers who have iPhones and would never touch SwiftUI in their lifetime 😀 so I don’t know if its the best motivator … but maybe the ability to test on a device vs. a simulator makes a prototype “real” and could definitely encourage a designer to learn more. You might be onto something.

Oh, and FWIW, I love Flutter as a developer, even for iOS. But I think a random visual designer off the street would have a heart attack if I tried to onboard them to Android Studio for some hands-on design work. Xcode isn’t a picnic either but the hill to climb is less steep in comparison IMO.