I don't really see it as a problem that other browsers don't immediately implement non-standard, underspecified APIs some Googler made and put into Chrome to g

I don't really see it as a problem that other browsers don't immediately implement non-standard, underspecified APIs some Googler made and put into Chrome to get a promotion. It's a problem when Apple refuses to implement standards because it hurts their 30% cash cow monopoly, but most APIs on that site aren't that.