Perhaps you’re misunderstanding my point. I’m not against environmental regulations and I don’t expect market mechanisms to eliminate externalities. On the contrary, I want environmental regulations that reduce (ideally eliminate) externalities in the cost of energy. This should, almost by definition, be the goal of environmental regulations. Cap and trade on energy producers, for instance, can and probably does do this.

As for the stuff about cryptocurrencies being associated with scams and wealth inequality, to me that’s entirely independent of environmental impact and should be dealt with (and probably can be dealt with using existing laws) regardless of the environmental impact.