Nobody sees the value in your programmatic money, which might as well be Canadian Tire Money or Emperor Norton Scrip.
When a government issues a digital currency in exchange for the right to live there, people will use it. But nobody wants any currency that you drew with crayons. Even if you somehow convinced some other tech bros that someone else will pay even more for it some day.
And don't get me started about the "stablecoin" myth.
We wouldn't claim houses are useless because the housing market has been taken over by speculators, at least in my city.
Digital money should be small enough to carry on your person, be divisible into small chunks, and its value should not wildly fluctuate from day to day. Bitcoin meets the first two of those criteria, but it violates the third. That makes it impossible to use Bitcoin to buy a pizza. (Although it did work for pizza for a brief time in the early days before its volatility became outrageous.)