A great quote that can be applied to pretty much anything. Doesn't mean that you should ignore opinion pieces completely though, as mentioned above, these (if a wide ranging selection is used) will give you a feel for the investor sentiment. And yes, the best way to succeed in these Wild West days of the markets is to learn learn learn. I use a number of YouTube channels and trading websites to keep up to date on news and learn more about trading. In the last 6 months, I have learned some invaluable tips, now I just need to make sure I stick to them - and it's not always easy. Go fish.
In this qoute we can relate it to cryptocurrency if we just give a man a crypto with knowing how it works it would be useless however if we teach that man how to use and trade the crypto he can earn more in to it. Also if you teach them how to fish they will remember it and earn from it than giving them a fish that can feed him for a day.