Concerns over Cryptocurrency Mining and the Environment

When BitCoin prices were spiking a year ago, people concerned with such things started pointing out that the energy required to perform all the mining could power a small country, and lamented the implied acceleration of the destruction of the environment due to the CO2-producing energy sources that were running overtime because of it.

It occurs to me that a massive portion of the US economy now relies on digital advertising, which is unquestionably one of the least efficient investments in the world. Does anyone have any idea what the electrical costs per dollar of ad revenue is? I mean, it must be profitable, or they wouldn’t do it, but it surely must be one of the lowest returns per environmental impact in the entire spectrum of capitalism. So, sure, complain about cryptocurrency “setting the earth on fire” to make some investors billions, but Google gets a free pass on miles and miles of private server farms cranking away 24×7 running their ad services and the auction house to make their trillions?

And that’s just Google, the poster child of this kind of thing. Where’s the outrage from the colossal carbon footprint of the overarching, advertising-based economy? I can’t remember anyone ever bringing this up. I think it should make people wonder why this isn’t seen anywhere. Could it be that the very companies making the most money from this activity are actively suppressing this kind of criticism?