This is not true maybe is based on your own understanding, accepting that Bitcoin is not risk free is supposed to make any one make good investment decisions and manage their risk, there is no investment that is risk free in the world including Bitcoin investment, I don't see any wrong talking about it as not a risk free investment.
I agree with you hear, Bitcoin is not a risk free investment, it's as risky as every other investment out there, but the risk is minimal when compared to the other investment, especially if you can hold it for a very long time.
Though when most people hear of risk they normally get scared, but if the procedure is followed according, their will be nothing to worry about because Bitcoin is always beneficial to those that are holding for a longer duration.
Almost everything in life is about risk taking but sometimes I neglect the fact that Bitcoin has a little risk because of it potential but yet I still invest with what is convenient for me, it is good to know Bitcoin is not risk free but I think it will be more good if you keep aside the " not risk free" and focus on your investment and do what is really required because sometimes when an investor put this not risk free mentality in their head, it might likely discourage an investor to some point. If one can be able to keep aside the following; discretionary, emergency and back up funds then that particular investor should be not thinking about risk but rather focus on how to use those funds judiciously.