Maybe the whales do it simultaneously because when you know the group that has whale members and give one order to buy or sell coins on the market then they will be able to move the price of coins on the market, a system like this has been used by many whales who always combining all its strengths into one to move the market.
If they work together to move and influence prices, of course it is very possible and everyone will be affected by what they do. They are clearly big investors and are able to do whatever they want, but sometimes what they do cannot be done simultaneously and inconsistently so that trading can run normally and is not affected by what they do.
It's certainly not easy for whales to equate perceptions because they also have desires that may not be the same.