I mean it is also true for crypto. BTC, the most energy-hungry blockchain, is estimated to burn ~150TWh/year, compared to a global consumption of 180 000TWh/y.

Now is that consumption useless ? Yes, it is completely wasted. But it is a drop in the bucket. One shouldn't underestimate the astounding energy consumption of legacy industries - as a whole the tech industry is estimated to represent just a few percents of the global energy budget.