The value of USD has decreased by about 10% over 2 years. Over the same time period, BTC has been half and more than double its current value – a factor of 5 spread. Oil varied by a factor of 2, copper a factor of 1.5. Eggs a factor of less than 3.
Things which vary that much can make useful commodities but are terrible currencies. You have accidentally given BTC a sick burn, since anyone who tried to pay their rent in crude oil would likewise be laughed at.
You just did an excellent job of explaining why BTC is no good as a currency, thank you