Google will require you to authenticate with your real name and/or government ID which is something a lot of FLOSS developers don't want to do.
It's quite scary that there's no such idea being floated in the post. Apparently they're ready for F-Droid to be relegated to the realms of Google-free devices that nobody, outside of a few hardcore privacy activists, is currently willing to use. Maybe that'll change, but I doubt significantly enough for governments to reconsider which OSes and third-party stores they need to support