Traders get oppurtunity when prices fluctuates to move their investment and benefited from it.Manipulations are always in every stream and whales manipulate prices in crypto market.So its just your decision that which time suits you.
Obviously, if you are a trader and you want to take advantage of it you can but the reality is that its because we have no regulations which is actually a good thing. This way fluctuations are actually an opportunity definitely not a despair.
There is nothing that keeps bitcoin from being 1 dollar or 1 million dollars, I am talking about technical and legal aspects here and not financial ones, there is a ton of things keeping bitcoin going to 1 dollars and 1 million dollars financially but nothing technically nor legally so that means price will definitely move up and down like crazy since nobody can do anything about it.
If a stock goes up too much, SEC takes a look at it and sees if it was legit or fake, nobody takes a look at bitcoin. Hence, it is the deregulation and not financial reasons.