But that's basically complaining that firefox doesn't just blindly adopt whatever google proposes. A lot of the concerns are about security and privacy, the thing that mozilla is praised for doing better than google.
And no, you're not forced to use google. You can make native applications when it's necessary to use privileged interfaces.
You prefer the management of Chromium, which makes billions a year from invading your privacy and force feeding you advertising, while also ruining the internet ecosystem?
https://mozilla.github.io/standards-positions/
That, and their shitty management shakes my faith in Firefox