The link in your article to the primary source of the Cambridge University survey is unfortunately dead. The alternative metric given (https://digiconomist.net/

The link in your article to the primary source of the Cambridge University survey is unfortunately dead. The alternative metric given (https://digiconomist.net/bitcoin-energy-consumption/ https://digiconomist.net/bitcoin-energy-consumption/) currency predicts 36.95 Million Tonnes of CO2. That's 0.1% of total CO2 emissions per year (https://ourworldindata.org/grapher/annual-co-emissions-by-region https://ourworldindata.org/grapher/annual-co-emissions-by-re...) and 0.074% of global CO2eq (https://ourworldindata.org/emissions-by-sector https://ourworldindata.org/emissions-by-sector). I'd probably agree that this is still pretty high for what amount to digital hording. On the other hand the seccond most popular blockchain Ethereum is estimated at half the energy consumption (https://digiconomist.net/ethereum-energy-consumption https://digiconomist.net/ethereum-energy-consumption), has a plan to move to proof of stake and has a lot more economic value. The space is still new and bitcoin has first mover's advantage, name recognition and trust (most hashrate, most reviewed codebase, etc).