You can sell your bitcoin for take profit. But don't sell bitcoin for cut loss. Sometimes if the price of bitcoin has gone up high we want to sell it for a profit. So sell bitcoin according to your target and don't sell everything.
Wrong every cryptocurrencies can be sold when cutting losses if we find something that we can make profit in altcoins. sometimes deciding to sell out to make more money is ok as long as you will return back to bitcoin for Holding.
We are in practical investing now and not just the OLD school HODLING.