Well first of all, according to your own blog post, it is not as much power as a single large power plant, but as much power as the single largest power plant in the entire US. And thats just an estimate. It potentially uses twice that amount.
And 10% of the power of all the worlds data centers is absolutely bonkers. That isn't a small number, its spectacularly large.
And all of this for something that has yet to be adopted by 99.9% of the people on the planet.