I'm experementing with cross-platform code in my app. And swift6 really pushes on usage of @mainactor on everything UI related.
I see that this package has 0 usage of @mainactor. But google tells me that windows UI framework win32 is not threadsafe and has some dedicated thread for UI. Also this package follow UIKit naming and approach, so I would expect that all UI will be annoted with @mainactor.
Reason for me is simple - my routers already has @mainactor on their methods. So it is just convinience to have windows UI to have @mainactor usage too. And same got to scene and app delegate.