MicroG downloads code from Google and runs it unsandboxed (which is why GrapheneOS devs criticize MicroG so). That counts as using Google services. And even if GrapheneOS sandboxes Play Services, getting and running one's apps that way still counts as using Google services.
MicroG downloads code from Google and runs it unsandboxed (which is why GrapheneOS devs criticize MicroG so). That counts as using Google services. And even if GrapheneOS sandboxes Play Services, getting and running one's apps that way still counts as using Google services.