[bhupy]

I think the idea is that it discourages certain kinds of consumption, and that's carbon-based consumption. Once upon a time, that could have been construed as a broad-based consumption tax simply because there were no non-carbon alternatives. Today, in 2021, that's not the case. Solar is already the cheapest source of electricity, and the relatively higher price of CO2 emitting energy is already a market-based "consumption tax". A carbon-tax just exacerbates and speeds up what's already happening. That's probably acceptable because time is of the essence as far as the climate goes.