Android developers can now force app updates https://techcrunch.com/2019/05/07/android-developers-can-now-force-app-updates/
I actually found replacement for all apps I need on #fdroid. I blocked google play services and then blocked or uninstalled all apps that complained about it. Now I don't get any warnings anymore. And from the article it seems that neither f-droid nor microg should be affected, hopefully
@angristan Nightmare inducing. My device; my applications.