A computer is much like a car or a gun, their ownership blurs the line of public, private, and personal property. I think we can all agree there is something fundamentally wrong with an individual buying a whole bunch of GPUs to mine crypto. How much computing power is too much for an individual person to be allowed to possess?
Banning would be a bad approach - but nationalizing computer companies and centrally planning tech would allow us to fix all of the problems plaguing the industry and ensure equitable distribution of machines across the population. The big things to fix are planned obsolescence and competing standards for every little thing - imagine if everything could be put on USB-C and lasted a decade or two, and if 90% of software was open source and built on a database of libraries maintained by a state-sponsored computer software org tasked with keeping everything compatible and up to date.