i don't really care about whether an apple-driven proposal can get vetoed by the community, since we never really had that power to begin with (core team has final say anyway, and everyone could oppose it and it could still get accepted), i'm more worried about arguably flawed features getting shipped from lack of community oversight.
so that it doesn't seem like i'm dragging the core team in any way, i'm going to use as an example my own proposal SE-0243, Codepoint and Character literals, which had a lot of Apple-employee supporters, but ran into community opposition, which is why it got rejected. if the proposal wasn't submitted to community review, certain people here, who know who they are, wouldn't have gotten a chance to write so much criticism of it, and it probably would have passed without much notice. I personally would have been happy with that outcome. but i also know there were other people who thought SE-243 was seriously flawed and didn't want to see it in the language. and now we are basically admitting that the approve/reject outcome can be different depending on whether the community as a whole is consulted before enacting a proposal, and i don't know if that's such a good thing for the ecosystem as a whole.