My understanding is that not denying your app to run on M1 Macs means it appears in the Mac App Store. So a user who has never used the app on iOS can go in th

My understanding is that not denying your app to run on M1 Macs means it appears in the Mac App Store. So a user who has never used the app on iOS can go in the store, pay money for the app, and try to use it on their Mac. So yes, that does create an implication of support by the developer for that app running on that platform. That is a different scenario than removing access to download an app on your phone that you purchased in the past. You can remove the app from the store and still allow downloads for existing users.