Sure and you can use microG and other services on your Google free phone. I do agree that flashing firmware without Google services should be easier on devices, but the actors preventing that aren't Google (locked bootloaders are demanded by your American telcos like Verizon, DRM lockdown is demanded by the copyright lobby and SoC vendors refuse to release the kernel sources).

But in general, I don't get what your expectation is, that Google will spend millions developing an OS and then give it to competition or deliberately provide worse user experience than their main competitor?