The instacart topic is just an example. An example saying, "if your economic system is currently capitalistic, and based on money, then voting with your wallet makes sense".
> I understand that it's hard, but try to imagine
That's so condescending.
> a world where workers can demand a living wage and not have to rely on the generosity of "good people" for the right to live.
Life is not binary, you can work on both. But your solution delegate the action to a small 3rd party, so it's still an oligarchy.