Bartering also assumes, for your example, that the apple farmer wants oranges and the orange farmer wants apples. Consider that either one may not. And then consider how many other goods exist even in primitive agrarian society that people may or may not want at any given time.
Currency is whatever the agreed vehicle is for value exchange that solves this. The apple farmer can now sell apples for silver nuggets and use the silver to buy tools from someone else later, which the orange farmer either doesn't have or is unwilling to part with. It allows for more complex transactions that then helped grow more complex societies.
It's framed as "vaccine bad" even if it wasn't outright stated. Or at the very least that Da Gubment is inherently reckless, irresponsible, and clueless in handling vaccines...just like they believe with every other government function.
When one of the points on an official report is
You know where they're coming from. And when they've chosen "there is no such thing as a safe and effective vaccine" RFK Jr. to lead our public health, you know where they're going.