It's a Bloomberg article, I think they wanted to keep it simple on the tech side and focus on the money. Besides, electrical costs are essentially a predictor o

It's a Bloomberg article, I think they wanted to keep it simple on the tech side and focus on the money. Besides, electrical costs are essentially a predictor of difficulty. The higher the electrical costs the fewer miners there will be. Smaller operations and household miners might have to close up shop if high electrical costs and low Bitcoin price don't make mining feasible. Miners dropping off the network means the difficulty will drop too.