JP Morgan spoofed the precious metals market and got caught.
In the medium of exchange category, the forex market has been manipulated for decades.
You are more at risk of volatility and manipulation in crypto markets because they are immature. Bitcoin is still in the discovery stage.
Well yeah, that was my point. That's why in many countries with rampant inflation they use USD or EUR, as mediums of exchange because they're currencies controlled by powerful economies and governments which have proven to be mostly stable throughout recent history, save for major disasters, therefore their currencies exert a large amount of trust and stability on the financial markets, vs BTC that fluctuates more extremely more quickly without any brakes from any government as the BTC you got yesterday for selling your PS4 on ebay could maybe now buy you a yacht or maybe not even a big mac.