But the question is that, how will you know the person that is buying the btc from is whale. Because you do not know the person that buys the btc.
It's just like a parable. Sure, we don't know who purchase our Bitcoin in the market (CEX or DEX). Unless we sell our Bitcoin to the people we know directly, from our wallets to their wallets.
there are time one is in need of money very seriously so at that stage he has to sell it btc to solve the problem instead of going out to borrow and pay interest when he the money to solve the problem.
For urgent cases, selling Bitcoin is understandable. We have no choice, we must focus on the priority.
However, in a normal situation, holding is much better because the value probably increases in the future. We don't sell our Bitcoin because of influenced by FUDs. Or doing panic selling after seeing a huge drop in Bitcoin price.