I wouldn’t agree here, because my experiences showed me that in 1-2 months you can know if you are going in the right direction. Of course you can pivot later, but if I do customer research and interviews properly and execute fast with MVP that I can charge for, I can move forward or throw idea and focus on the next one.
If you are happy and satisfied with your current life, then you don’t make any mistakes, no matter if there are cryptocurrencies or not. If you don’t understand cryptocurrencies, do not risk your fiat money. If you want to understand, use demo accounts and learn about every crypto product and why it has trading volume, is it because of market manipulation or there are many people who believes in it and even use it in some game, applications, etc.