No, such approach not only benefits the benefit the huge amount Bitcoin holders but to the whole community. If you really want to see some asset's value to grow then you need holders of that asset and we now see Bitcoin's value at its current rates only because of the holders.

If everyone makes their mind like yours and start selling Bitcoin and other assets that they hold then not only Bitcoin will lose its value but all those other assets will also continue to lose their value. Even stocks are gaining value because of the holders and investors. That's the power of holding.

I know that when you make good profits then it's better to sell with profits but holding is the most important thing to make such profits because without holding and investments you can't really make profits.