Of course that's expected. Whatever goes up must go down eventually. The question now is what's the next floor?
It is science “the law of gravity”. And agree with what you said. The next is that after the fork it will eventually increases. This is not about pump and dump and it was not like a normal doing in bitcoin as it requires more money than altcoin pumping and dumping. It is a natural way of human expectation and perception.
These 'pump and dump" was the term being used by some industries where promoters talk up a stock to a new wave of sucker investors, then they dump it for profit. That was according from the article that I reviewed. Base of these, let me say that this $6000 is just another "pump and dump" if we were going to base its current price. Is there anybody wants to correct me?