you are a fool to think bitcoin price is not manipulated and you are a bigger fool if you think this manipulation is as big as a couple of years ago.

in my experience price of anything can be manipulated but it is much harder when the market size of that thing grows bigger and bigger. for example you can easily manipulate price of an altcoin with a small market cap but when this market cap grows and more importantly when there is a fair distribution, it becomes harder and harder to manipulate the price.