Google Play Services (GPS, what a 'we can talk about it at Starbucks' coincidence) is the name given to the collection of core services, plural. Gboard phoning

Google Play Services (GPS, what a 'we can talk about it at Starbucks' coincidence) is the name given to the collection of core services, plural. Gboard phoning home, core service. Offline Maps limitations, core service. Digital Wellbeing, core service. So on and so forth. You can say that "core services" is "the important stuff," or you can look at the individual pieces that comprise "core services" and get some insight into Google's business rules for Android. Everything that can't be disabled indicates a GOOG business requirement.