> decades-long recessions and wars triggered by fluctuations in the commodity markets

As opposed to now where we have no recessions and no wars? A deflationary currency doesn't cause a recession, the unwinding of practices like fractional reserve banking or the deleveraging of debt do. When these spin out of control the financial system becomes fragile because none of the intermediaries are resistant to any sort of failure to be able to keep their promises. If no one person in an organization is really accountable, why would they care? They can make short term gains, and when things fails they all fail together and no one really has to claim any substantial responsibility - they can say 'it just happened'.

So what you are talking about is a problem with certain systems, not with money that doesn't lose value. Then again it doesn't come as a surprise that a co founder of a company so misguided and desperate doesn't really understand systems, accountability, or even bitcoin/cryptocurrencies.

That is like saying 'the value of the discrete cosine transform isn't JPEG but what it lossy compression gives us'. They are separate things, and denying the impact of one is a simple, easy, and wrong answer.

You can get that while being less deflationary though, e.g. Dogecoin.