We call those people Whales or Sharks who have thousands of Bitcoins, but why we don't call them Camels who do wrong trading practice at the right time, just like "Black Americans" whom I think you also consider out of the wit.
They just do bad trading practice as when the market is flying, whatever they do to just sell sell sell and and leave the market in trouble.
If they are selling without the intention of manipulating the market like the whales, why should we call them such name when they have every right to their money. Everyone has a goal set, and the fact that you have your own goal set for All time high does not mean that everyone too would set their goal to All time high, some people are in for short term investment, while some are in for long term investment, it all depends on what we want from the market.
I think anyone is entitled to their money at any time and should not be giving name for selling their entitlement. It is not possible to work on the mindset of everyone same time, if some decides not to do sell, we will still have some that will be adamant to sell, so we just have to leave the market open to everyone.