Holding is never that easy as people are thinking they will hold and can get profit, whether there are some of the family problems and the situation where some traders want to hold the coins, but it is too difficult for them at the position to hold this they sell, So, I think day trading will be favorable here as compared to holding.
Not all having hard time holding coins, there are big investors who have lots of money to spend and not to use their investment, in some cases, your point is true there are people who at first thinks that long hold will give them better profits, but along the way they forced selling their assets due to some important emergency cases, some might because of fearing to lose so decided to sell with small portions of loses, both day trading and long holding are good it's just the investors mindsets that will depend if how they will treat both strategies.