A whale investor can make the market take an unusual shape, but not for long. When a person buys or sells billions of dollars of bitcoins at once, it is normal for the market to behave differently for a while. But he alone cannot control the entire market as he wishes. But yes I believe that some part of the market can be controlled by whale investors but the whole market is not dependent on them.
Control over the market with immediate changes of the chosen parameters is not what we are mainly talking about whales influence. Moreover it has no sense for them in such control. Main idea is in organizing of a long trends: they provoke prolonging or changing of the trends in a chosen market and earn on how these trends go forward based on that. No need of controlling in each minute.
The pope will never be able to control and influence the price of Bitcoin.
In the amount of Bitcoin which is only 21 million tokens and is almost gone, Holders and those who keep it are many people not just a group of whales.
I'm sure if the whale holds some Bitcoin and sells it then someone will buy it back because Bitcoin is the most popular asset and is in a hurry to make it an investment asset.
Bitcoin itself is the only cryptocurrency whose price is not centralized by anything and anyone, so it's impossible for someone to set the price of Bitcoin.