So basically the android approach
Nope, windows phone took the Android approach. Anyways, android is usable without signing into a google account. You can use the Amazon app store (which has most of popular apps), or fdroid or download apk files yourself like windows of old. Windows is a paid product, Android is not. Apart from including ridiculous ads and telemetry some of which can't be disabled, Windows seems to be taking user hosting steps every…
I guess the manufacturer could have opted for that type of lock-in as well with their images, but seeing Android One is a near-stock as-is OS I don't know if by default Android forces you to log in and phone manufacturers remove that type of enforcement.