Just want to put this out there. What is the problem with crypto mining and energy consumption? Yes, I know you'll raise environment concerns, I get it.
However, consider this: a civilisation is measured by its energy consumption. Before we discovered fire and used any stone tools, the only energy we had was whatever our bodies produced. Then we discovered fire, made tools, invented the wheel, etc. Until now, when we use computers, robots and other machines to help us live. Our life expectancy and quality of life has increased dramatically.
Shouldn't we concentrate our efforts on using clean renewable energy, rather than restrict our use of it?
Frankly, if there is a problem with too much energy consumption, we should go back and live in caves, and hunt in groups.
From my experience, I like renewable energy. Crypto mining isn't a major problem, so why should we avoid it? We can avoid Elon Musk and his tweets. So many places are left in our world where we can build renewable energy resources. OP are right! We need more renewable energy but we can't avoid technology.