But that wasn't your argument. Bitcoin and its value itself has no relation to GPU prices. A correlation doesn't change that.Except it is never the case that only BTC crashes, they're all corelated, if BTC crashes you get paid less.
NH has a hashrate of 59.2556 TH/s for ETH out of a total hashrate of 1116.03 TH/s. That's 5.3%. I'd say that's pretty insignificant. NH is the place where people with a single GPU, bought for gaming, mine with on the side. Almost any serious miner with multiple cards will not use NH. The dudes who own a warehouse full of GPUs aren't going to be using NH.NH claims they have over a million active workers every day, that's at least a dozen million graphics cards in use for mining. It's not insignificant.