Holding has it own risk, the risk involved in holding is that it might lose its value while holding. But i agree with you that everyone has different approach as regard profit taking in the crypto market. For me i will say follow what suit you best. Not everyone has that patience to hold an asset for a long time and also not everyone has the discipline to know when to trade and when not to trade.
It's true that some people can't hold their assets much longer because of different reasons from their own economy situation or they just simply not patience enough to do so. But majority of people wants to hold it for long-term purpose so choosing the right asset is a must to ensure the process goes without much trouble, Bitcoin is one of the coin out there that is qualified for this purpose because of the behavior of Bitcoin.
You need to have good knowledge of this kind of strategy. I mean, following the whales is tough. They can quickly
change their direction, meaning to say that you can quickly lose your money.
Following others strategies are common in trading especially if they don't know how to it by themselves, the big minus about this one is that you won't learn anything.