When I termed selling Bitcoin as a mistake, I'm making emphasis on SELLING DURING A DIP no circumstances can justify selling during a dip, because the only reason that would prompt anyone to sell during a dip is FEAR OD BITCOIN FAILING and like I always say, no one would even consider selling an option if they truly understand the framework which Bitcoin is built on. Selling on other circumstances can be said to be a choice which I'm not against. Again my emphasis is basically on SELLING DURING A DIP
Selling at DIP prices is of course not only a mistake but also due to a lack of good knowledge and most people who sell at DIP prices are of course panicking or perhaps in a state of urgency. For example, if he invests in Bitcoin, he doesn't use cold money, so at the same time he needs money quickly in a DIP market condition, so he is forced to sell it even though he is making a loss. This happens very often among novice investors.
The thing is, it's really strange if someone sells at the DIP price if there's no particular reason, that's why before we invest in BTC we have to learn first that BTC is for the long term so use cold cash or have other emergency funds.