I hope so. The changes can mean two things: people can only use it easily in custom roms (I guess there is an overlap there) or they actually would play with Google: i guess technically they could as well register and sign the stuff with a Google key as the software is all FOSS and would allow defining another responsible developer (otherwise Google would have to through out all FOSS without CLA from their playstore). I guess quitting would be an option, but IMHO the outrage outside the bubble would probably be hardly noticable, so what would be the point?