Yeah I'm not sure why people think that barter is inherently more egalitarian than money, it's a pain in the ass to have any top down control of it if inequality is a problem.Actually if everything works like I think it does then you are almost 100% wrong. After all it's called currency and not capital or worth. In other words it's absolutely not true that just because quote "tokens" that represent worth don't exist that merchants won't accumulate capital. Actually it's opposite, with merchants accumulating more tresures, "gold", land, workers, factories etc. without any method of control. If you want to stop quote "massive capital accumulation" then you need currency or tokens or simply numbers that mesure worth in order to create taxes and make restrictions and other laws that prevent that from occuring. Without currency merchants can grow more wealthy infinitely and there is nothing to stop them. I actuall find it really funny that in order to prevent merchants from rising people are voting against (or in this context not voting) the one thing that would hit merchants the most and allow other factions to also collect money and balance merchants out.
Also economically we absolutely need currency yesterday. Without it any country that has it can spread it's currency inside our borders with us completely unable to stop it, which would allow others to start manipulating our economy. Taken together wtih our current political situation that could allow us to crate the most important currency in the world (planet) right now that would allow us many amazing culture and economical options there was never better time to pick currency and there was never worse one to not pick it. After all the Machine Army of All-Under-Heaven can do the same thing and with us without even our own currency they would dominate us economically to the point we might never recover.
Also also if we don't take currency the Machine Army of All-Under-Heaven almost certainly will (as long as they are not idiots) and spread it to our borders so merchant will get their hands on money no matter what we pick (presumably). That is if people still think currecy will make merchants richer (altough I'm almost positive it really won't)
Then again I might be just wrong and if so please everyone point it out.
Currency probably unlock some top down economic reforms for more wealth redistribution and more economic opportunities (like government and venture loans for lower class entrepreneurs).