We are all aware that the bitcoin is the last hope when the other altcoins including Ethereum are struggling to survive and even bitcoin has not had any massive pump as it's fighting hard to stay on $8,000 despite numerous fluctuations but will it help bitcoin if we just move our funds to bitcoin which we have invested into altcoin as it will increase the demand of bitcoin if everyone can do that as this will literally do what the whales have been doing to increase the price when they want by creating the demand.
It is just like saying altcoins should stop existing because shifting our attention to bitcoin would mean that altcoins will no longer have any money being added to their market cap, so there will be less demand for altcoins, thereby jeopardizing their existence and also will never make any investment that we have built in bitcoin to yield any positive growth.
The great thing about your suggestion also is that the price will always pump since people will always make demand for it, so even if we see some dumping, it would not stay long like some dump use to stay long before the market corrects back to its previous value before the dump which will create confidence in people nit to always panic anytime that they get one.