I think this is telling in the sense that young people are willing to take more risks and invest in a risky investment method like crypto because millenials are fed up with the current economic structure, they are not making enough money and everything is expensive. I think this sends a message beyond bitcoin and cryptocurrencies as a whole.
Yes, young people like more challenge rather than old people. Old people more thinking about passive but young people more active.
But i think bitcoin also good for older ( but not very old ) to get a chance to collect profit.