While last year may have put cryptocurrencies on the map, Buterin brings up the risk/reward profile. He doesn't want investors to have false illusions about pie-in-the-sky returns without identifying any of the risks. Meanwhile, the ETH price has advanced nearly 40% since Feb. 5.

Buterin took to Twitter, which is often his soapbox platform of choice, to seemingly tout the merits of traditional investments at the expense of cryptocurrencies but only in the event when an investor's life savings are at stake.

He doesn't offer specific investment advice though stocks and bonds are about as traditional as securities get. His comments echo the sentiment of regulators around the world that don't want to see investors risk it all on an emerging asset class. Meanwhile, even traditional asset managers tout the merits of diversification.

Buterin's advice to not invest "more money than you can afford to lose" isn't the first time he's addressed cryptocurrency prices. Previously he expressed some frustration with the focus on price.