On future carbon taxes, which I agree with, the bitcoin network can easily operate on a fully renewable grid - the problem with renewables is they are intermittent and the energy requires storage. Neither of these limitations apply to the Bitcoin network.
at 53min 20 -
https://www.youtube.com/watch?v=aHUoMmKDLUICarbon taxes is just a buzz word. Just like ESG.
But nobody can deny the reality for the long run, and fossel fuels aren't going to disappear.
Anyway bitcoin can be mined with green energy sources , when their price becomes sustainable and competitive