There's an argument to be made, that the relative stability here is bought from volatility and economic suffering in poorer countries, because the US dollar is the global reserve currency. In addition, there's a few other relatively strong currencies, which are used as reserves for weaker currencies. It seems that globally, the success in these countries is bought from weakening the currencies in poorer countries.
There's also a lot of historical inaccuracies and rewriting of history to defend this system. For example, the great depression is partly blamed on the gold standard, but in reality it happened exactly because the gold standard was already broken (since 1914), which resulted in wildly wrong speculative monetary practices and policies.[0]
As you said there's plausible rational arguments from both sides. But then again, are the central banks even following practices based on economics, or did they become politicized and corrupted, because of their central position in the economy? We see blatant monetary corruption happening in autocracies, but is it happening in western economies too, but it's just less obvious?
I have used years to study these issues and I'm becoming more convinced every day, that it's time for a hard money standard, i.e. Bitcoin. And, I think it's inevitable, because historically, people always vote for harder money in a free market.
[0] From this perspective, the Austrian School of economics has the correct explanation for the Great Depression. https://en.wikipedia.org/wiki/Great_Depression#Austrian_Scho...