> Android doesn't even let you use the OS properly without account.

I'm not sure what you mean by this, can you explain further?

I will say, that I've had a couple of Android phones for perhaps 4-5 years now and while I initially did use the bundled OS on my first one, I have never signed in with a Google account.. I use CyanogenMod now on a Nexus S with no Google apps and the phone doesn't seem to be without features that I might desire, indeed there are vast number of developer options that I don't use. Certainly there are third party apps that I know exist that I just can't get (F-Droid is limited sometimes) but that is not really OS functionality in my opinion.