Thanks for the thoughtful article.
I think BitCoin is more than just measured against the Dollar. While the Dollar is the current Reserve Currency, BitCoin does trade in many marktes across the globe and is redeemed for all sorts of currencies - not just Dollars. So, the Dollar can crash, and that actually may not damage BitCoin - but it may well make it much, much stronger in other currencies. Also, as long as online bullion dealers are accepting BitCoin for payment, there's a strong case for cryptos being partially backed by precious metals - and there are currently many crypto projects that are doing just that.