The Google device is NOT truly yours because you have to look for cracks if you want to root it or remove the Google stuff. The law may also be against you if you crack it. You are just a guest on your device...you are "licensed" to use it just like you get license to play music on spotify, watch movies on netflix etc...nothing is owned anymore and very few people care.
Many Android devices, including all the ones that Google make and sell themselves, Sony devices, Motorola devices, have an officially supported path to running any code you want on YOUR own device.
Usually that path is: boot the phone into bootloader mode, plug it into a computer, run `fastboot oem unlock`, accept the warning that this will void your warranty, then `fastboot flash <image file to flash>`. An officially documented and supported way to do exactly what you want with the device that you own.
Yes, it voids your warranty, but it's not forbidden or illegal in any way.
Unlockable bootloader, yes. Officially supported ROM without Google Play Services, absolutely not.
I see you defending Google around here. That's fine but a grand-grand-grand...-parent of yours was saying that AOSP is unusable, and that point still stands and is true.
You've confused yourself. The whole point of a device being yours is that you can install not officially supported ROMs.
The officially supported experience with Google Play Services is no more privacy invasive than the officially supported iOS ROM, but in the case of Google devices, the device is yours, and you are not limited to officially supported ROMs.
By google devices, do you mean only the Pixel and Nexus phones? Or does that include all android devices? Because for example Sprint Galaxy s5's can't be unlocked.
This is not true on the actual Google devices (Nexus and Pixel lines) that have a supported path to flash your own rom, and root. Google so far has been supportive of the custom rom community. Some manufacturers (cough samsung cough) have not.