> if all non-essential industry in Texas didn't exist, would you expect the same amount of investment in energy production and thus an abundance of energy for 'socially valuable' uses?
If those industries are using that power that Texas has invested in producing, then how is it "abundantly available" for socially valuable uses?
Yes, without things like crypto, we probably would have somewhat less investment in green energy sources. We'd also be burning less coal. Given possible futures with "more fossil fuels and more renewables" versus "fossil fuels coal and fewer renewables", I'll pick the latter every time. The goal isn't more renewables, it's replacing fossil fuel with renewables.
Worse, those renewables being used up by cryptocurrencies are going to be the optimally-located renewables with the lowest installation and maintenance costs for the highest energy output (think: most reliable wind at high speeds, least cloud cover and highest sun angle). As we do continue to transition further away from fossil fuels, every additional installation is going to be in locations marginally less competitive than the ones that came before. This means that transitioning the non-crypto loads will take longer and be less cost-effective than if crypto magically disappeared overnight.