Understandably cryptocurrency could be seen as an experient on our psyche, but I don't think that's what its purpose was created for. Just like many other things that effect our human behaviors and mentality, Cryptocurency produces many emotions during trading and when the price of bitcoin rises and falls. So in that sense I would agree that it could be an experiment on how we handle certain situations, but really cryptocurrency is much more than that.
I do not agree about crypto being a psychological experiment and practical involvement in the crypto market. In my opinion, calling it a psychological experiment takes it a bit away from the real world to what some people also call it a scam. I believe it is more like a practical game rather than a psychological game because you have to stay and act actively in the market and hold or sell at times favorable for the motto of profit maximization.