From an Android developer perspective, not good. All apps on f-droid will have to be certified by the developer with Google (it's per-app I checked) otherwise they won't work at all. And the process of not easy, even for a verified play store developer, I still have to jump through hoops to register.

Then you have to explain to users how to enable this. Not too mention the onerous F-droid requirements for publishing, it's bad enough as it is.

Average users are not going to do this, just like Google wants. Hopefully someone sues them and wins or we get Linux phones, not holding my breath though