You are right. Is important to let them know the risk behind Investing in Cryptocurrency. When I bring people into the Crypto world, and they want to invest. I do explain to them that the price of coins do rise and falls. Also teach them about been patience. If you don't do this things. You might end up been a bad person to them, when there is drop in price of those coins they Invested in. No doubt, Investing in Cryptocurrency is however profitable.
This is one of the reasons why I don't get too involved nowadays. No matter how much you educate them, if the price drops all of a sudden, or in case the coins get stolen, these guys are going to blame you. What the ordinary investor want is high returns with zero risk. But there is no such thing. You can opt for low risk assets, but then the returns will be low (US treasury bonds have interest rate of 1.3% per year). On the other hand, if you opt for high risk assets, then there is a chance that you will get good returns. But you should be open to the probability of your asset losing 50% of its value in a year.