Some people make the mistake of selling all there Bitcoin just because they want to start a new business or investment with the money and after selling it and the start there new business or investment some time later it crashes and they lose it and also lose their bitcoin investment so keep your Bitcoin investment going while trying out other business or investment.
Selling our holdings at once is never a good practice, I'm sure that Majority of this people that like selling all there bitcoin are those Investors that have not accumulate enough stash of bitcoin in thier portfolio they feel that after selling it that it won't take long to accumulate it back. While those Investors that have been struggling to reach the status of overaccumulation can only sell 5 to 10% of thier holdings whenever it double and after that will have to allow it to compound upon itself before attempting to sell again, because they know how Long it takes before they were able to reach the status of overaccumulation so they wouldn't want a situation where they will start the accumulation process all over again.
In my own view, those investors that are fond of selling their Bitcoin investment along their accumulation process can be said to be short term investors because they are triggered into selling their Bitcoin investment because of the little profit they see, and they will regret their actions in the future when Bitcoin has achieved the price where they could have gained financial freedom. Advising those investors struggling to reach the status of over accumulation to sell five to ten percent of their Bitcoin holding makes you look like a trader because you are only concern with buying Bitcoin at a low price and selling it at a higher price within a short term.