Utility companies very reasonably and correctly do both. People, and organizations, can do two things. Maybe even more than two.
On the short term, using less energy is important because it helps smooth over demand curves. If everyone suddenly plugged in an EV tonight, the grid would crash, because demand grew too fast for the utility providers to keep up. That is bad.
On the long term: every metric that measures quality of life correlates with energy usage. On the long term: this is the path of kardashev type 1 for our great-great grand children. Blanket the earth in solar panels, turbines, and nuclear (and sure, some fossil fuels are good to). Solar panels aren't free to build. The market needs a reason to build them. I don't really care what the reason is. "Crypto" feels better to me than "turning on your heater and opening the window during the winter" as someone else in this thread suggested. Trying to quantify "how much better" feels like a waste of time that could be spent building more power plants.
My statement "crypto financed a 2.3% expansion of US power generating capacity" is obviously dramatic; the mechanism isn't precisely A causes B. Its dramatic toward the aim of communicating the message that Demand creates Capacity, and if you believe Capacity is Good (which is not something up for belief or debate, unless you're Ted Kaczynski) then it logically follows that Demand is Generally Good.
That does not mean nor force the conclusion that All Demand Is Equally Good. I never said that. But, generally, it is good.