Drop isn't new in the market, just consider it as free fall as everything happens here - up and down. And it was not the thing we worried about but rather think that this is really how the market works. Might be because of the SEC, some FUDs, negative news, etc - all of them are a sort of manipulating factor that would affect the price but just believe that Bitcoin won't go that low anymore that we must be worried off, better make this a reason to buy more the same thing that the others did.
True and even in the time that cryptos are not yet here, drops are already happening in the stock and other markets. The term free fall you use there is related to gravity but that is only natural while in the financial markets there are manipulations that can sometimes occur but people are already used to this that they treat it a normal market condition and besides, they can still be able to ride it just like a normal market movement. So what if Bitcoin can go lower than usual? Didn't you know that many people are actually wishing for it to happen? If we combine all of their buying force, Bitcoin will rise and manipulations can hardly counter it.