Especially when Google itself is promoting Flutter which in a way is a non-native UI framework. I think as long as a framework is performant and implements well the design guidelines of the OS this is what really matters
Except that Flutter is pretty bad on anything that isn’t Android. The “Cupertino” theme needs significant work; it’s significantly worse than even Ionic is.
I don't call that a defence when it's already out in the wild, and people are already talking about it like it's "good enough" when we are already able to use its version number as justification when it's clearly not.