Central banks can influence money supply, but it doesn't mean they don't affect themselves. The value of their fiat currency influences their worldwide economic dominance and stability. Every money printing venture risks inflation. Moderate inflation boosts expenditure, keeping the economy going. What's the true issue? Why are the rich growing richer? Printing money isn't enough; the typical citizen lacks access to financial instruments and markets that leverage inflation
Bitcoin's valuation as a safe haven, like digital gold, makes it deflationary, not merely its supply. What happens when no one spends and everyone holds? Stagnation. More than keeping assets, the economy thrives on transactions. What if we could create a stable currency that encourages spending without depreciation? This demands monetary policy innovation, not merely acceptance of inflation manipulation
Central banks will be held accountable for any mistakes that they do, which is their problem to be fair. If a central bank doesn't solve the issue, it would be responsible towards the citizens directly because in most nations they are independent, meaning that it doesn't matter to elections because people are aware that it's a different organization. President can't just go and print more money, sure there are some nations like that but in most democracies they are two different places.
So, central banks will face pressure and firing and even worse, which means that they have to do their job quite well, and not really ruin a countries economy completely. And to be fair, there aren't that many nations that got worse JUST because central banks, maybe central banks were a part of the problem, but it wasn't the only one.
All topics related to central banks and other economies play a major role in the economic instability or destruction of a country or the inflation of that countrys currency. So there is no room for anyone to argue against your view that there is no way to hold the central bank solely responsible for currency devaluation or economic malaise. However the central bank plays an important role in restoring and normalizing the economic situation through restructuring the economy. No way can all these responsible central banks escape. In this case the system of government is also interrelated.