No hedge fund can break bitcoin if there are enough early adopters that are willing to stand up to them.
This is very shortsighted thinking. Central banks print at a rate of 2-3% per year. After a hundred years, they can break anything. They can break the entire economy.
You won't even notice until it's too late.
If you care for bitcoin, you should sell when prise is rising and buy when price is falling!
No, if you care for Bitcoin, you should learn to play the long game as well as they do.