You could also say "more power than 3 large US cities" and your statement would be equally valid, yet much less impressive. It's about as useful as talking about "mid-size rocks". Fist-sized? Refrigerator-sized? Bus-sized?

Did you know that China curtails more hydropower than the global electricity consumption of Bitcoin, than entire "mid-size countries". China literally lets water flow through the dams without generating electricity with the turbines, because they have a hydropower surplus that they can't redistribute through their grid. When you start realizing things like that, you realize Bitcoin's electricity consumption is, fortunately, still a drop in the bucket, compared to the immense waste from, well, everything else.