It's not avocado toast. It's Avocado toast, multiple streaming services, taxis, expensive trips, excessive psychoactive substance use (including alcohol), overpriced coffee, fast fashion...
However yes, sound money doesn't fix unequal distribution of opportunities and power. That's because that is not the thing to fix, because that is the natural way of how things are and have to be. (unless you take drastic measures to bring down the better equipped, more motivated etc.)
Sound money is a tool to fix the cleptocrats from stealing from everybody under the hood via inflation (of the monetary supply), to only allow them to steal openly through taxation.
The left had been saying a lot of good and necessary things for decades or even centuries. Economic issues were never any part of that.