Would a universally imposed carbon tax (on all Green House Gas generating activities) be good for Bitcoin?
The below video points out that energy generated by fossil fuels creates negative externalities that are not accounted for in the price.
Users of this energy (like bitcoin miners, Christmas lights, etc.) unfairly profit from this at the expense of those who are not using that energy. This leaves bitcoin open to attacks of wasting energy and being bad for society.
Antanopolos also point out that miners will tend towards the cheapest form of electricity...if a carbon tax makes renewables the cheapest form of electricity for all bitcoin miners, then all miners would use renewables. He implies that miners might be more nimble at switching than others, which could give bitcoin an advantage in a true carbon priced economy.
In short, he is saying that if you can properly price all externalities, then you can let markets decide what is valuable and what is not. To me, this is a more objective and fair form of government regulation rather than the often times subjective, politically motivated and piecemeal regulations that we currently have. Would we be better off having a single debate about what the cost of GHG emissions are rather than having 1,000s of debates about the pros and cons of various GHG emitting activities?