I also read something similar about Mark Cuban suggesting that some 10% of one's retirement should go into a bitcoin fund. If bitcoin explodes, then it can make a meaningful difference in one's nest egg but if it doesn't go anywhere then it's not earth-shattering.

A lot of the alt coins are going for like 10x and 100x over the last year or two, leading one to ascribe to the validity of the idea that one can spread their money around enough altcoins that if one hits that 10x figure then it makes up for a lot of dud coins.