ideally the federal government would not have an opinion on what citizens use electricity for, only that the externalities of power generation are priced in.
at a high level, crypto mining is just arbitraging the price of electricity. if the externalities are priced into generation, this is a non issue. if they're not, a tax should be applied that doesn't discriminate by use case.
Only if you take the stance that energy generation and use sure be governed by pure free market economics, which never works out in the real world. Natural resources are limited. Mining/drilling has environmental impacts. People need energy to survive. It makes a lot more sense to go the opposite direction – treat it as a public good (which it is) and regulate usage. Otherwise you will end up in the inevitable reality where there is a large bitcoin mine in town printing cash for its owners and no one living around it can afford to heat their houses.
For example, if an individual wants to have christmas lights on their house year round, I think they should be allowed to as long as they can pay their electric bill. However, if a crazy billionaire wants to blast a giant laser into the sky and this causes brown outs due to the power draw to the surrounding community, then I think the community should be able to get the laser shut off. And on the other hand, if the billionaire runs a free entry water park and that causes brownouts, I think the community should be able to decide whether or not to flip the switch.
if this approach also discourages free water parks, I'm okay with that. if the community really wants that, they can weigh it against other public interests and consider funding it out of public coffers.
It's absolutely reasonable -- if not likely -- to think that "the community" thinks of bitcoin mining as a wasteful and stupid idea and is expressing that preference through its politicians. I don't think you're going to see a lot of arguments in terms of "this is political overreach."
but yeah, I don't really expect anyone to care much about crypto bros getting a targeted shafting. dueling windmills would probably be a better use of my time.
And now that crypto has better "work functions" e.g. "proof-of-stake," there's just no reason to not tax this.
All of this probably becomes even more true as load-shifting becomes a bigger deal. Like: currently, replacing gas-powered boilers for 24/7 industrial processes with electrified heating isn't anywhere near cost-effective if you have to pay peak electricity rates for heating, but there are a bunch of new heat-battery companies spinning up that will take advantage of wholesale fluctuations to generate a ton of heat in the middle of the day when the sun's out, heat up a big box of rocks or whatever, and they siphon off the heat over the course of the day as electricity prices spike in the evening. This could dramatically accelerate industrial-heat decarbonization (which is something like 30% of US GHG emissions), but it only works if there's a price trough to take advantage of; if there are crypto-miners there to gobble up all the curtailed power and stabilize the price, the economics don't pencil out, and we're stuck with gas heat for factories. Again, doesn't seem unreasonable as a thing the state would have an opinion about.
This is the entire point of government.
More like – we will cut subsidies on coal by just a little bit and let them try and get profitable by themselves.