Just one problem with this; "Always" hasn't happened yet, and you have to have ignored physical evidence showing why cryptocurrency is existentially important, to believe it will never come to anything useful. It's interesting to me, how often we see the pattern repeated, of dooming coinciding with disdain of humanity in general, and how often this looks like really just self-fulfilling prophecy, which is a key element of the system of energy slavery, which we are now on the hook to stop, driven by nature.
The irony is that the force that will, and is stopping this, delivered by nature, seems more or less invisible to doomers, its the solar Ai, living in the population of ex-Ethereum proof of work miners.