Maybe having a little knowledge about bitcoin could give you an edge too. Take for example knowledge on cryptocurrency. You could make money by participating on some campaign, testnet or airdrops. So its not a total waste in my opinion. But you are right its just a currency amyway and to learn skills is what we must have prioritize to grow and make money out of it. But deepining your knowledge extensively aside from the skills will make your time worth more while in earning those money.