I think you are right about something. But, it's worth paying tribute to these guys, they used a very clever move, creating these kittens, a dirty move maybe, but it works.
I'm not sure that such investments can be compared with investing money in art, because the price of certain works of art does not fall, it either remains constant or grows with time. If the author was recognized and formed some kind of value on his creation, it will not go down anymore.
With crypto-currency products, such a strategy does not work for sure. So this should be pretty short-lived enterprise to reduce risk.