I think one should know how to diversify their investments, if one only focuses on crypto is also losing many investment opportunities in other markets, it is fine to be focused on crypto as your largest investment, but without neglecting the study of other markets, I am mainly not worried about my investments in crypto and it is my biggest investment for now, but I also like to invest in stocks, precious metals and indexes.
I must also say that the biggest profits on my investments have come from cryptocurrencies, but I have been in this market for some time...