I’m trying to run my iOS app unmodified on an M1 Mac. So that explains why the macCatalyst check doesn’t pass. But why does the iOS 15+ check succeed when it even reports it’s running as iOS 14.7?

I've been having the same today updating Numbers, Pages and iMovie. Each one has taken many hours to install!

Ok, it seems this only happens when building for the simulator. Which isn't really an issue. When I archive the app, it builds with bitcode just fine.