The headline is wrong.
Those advice you give only works for people who trade cryptocurrencies. And most people do that without any prior knowledge or experience. That's why people lose money. People also lose money because they gamble with unknown coins and unlisted tokens expecting higher returns. But many times those returns only turn into bigger losses.

Owning crypto and trading (especially day trading) isn't the same thing. Don't invest in crappy projects, stick with Bitcoin and maybe (only maybe) some of the more popular alts. Understand that the market moves in the direction that Bitcoin moves, so there aren't many reasons to look for something that will act differently from that trend. If you don't day-trade and gamble with your money, there wouldn't be a need for a trading guru or mentor to help you out.