No, selling everything would just not be smart, if you consider this with all kind of events that are upcoming this year.
The halving that is coming will let the price rise so you will lose profit when you are selling your bitcoins plus the bitcoin is getting bigger these days so that is also a reason to not sell the bitcoin at all.
Of course selling everything is not a good decision but the halving will comes after some years. So this reason would not play any role for every one wants to buy/sell or holds its coins. The best strategy, imo when there are pumps or dumps is wait and see not panic and small steps.