Today's hold strategy can not create as high a profit as it did in the past. The current Crypto market is volatile as no one can predict their price. So rely on the experience you have to invest in Crypto, so you will succeed.
I think They just say that the popularity of bitcoin reduces time by time because many people already know it. In fact, people who have statistics are those who are not tech conscious.
Holding is a basic principle in order not to lose much profit. Obviously, if you are not good at trading, you will only hold the coins and wait until the time for the bull market.