You are very right sir, saying that Bitcoin is risk free is very much misleading because we live in a world full of uncertainty, anything can happen in the future that may be out of our control, so it's not proper to be saying that Bitcoin is totally risk free, because being alive is also risky if he doesn't know.
Of course nothing is risk free but when we are discussing about bitcoin, we have to reflect back to the beginning days of bitcoin as see how well bitcoin is doing and how it has evolved, then we can not compare it to any other investments as bitcoin is Definitely less free when compared to investment like bonds, stocks etc.
Life generally is risky but then why not take the better risk with bitcoin that is not guaranteed but more guaranteed than other investments.
The major risk I can agree with when it comes to bitcoin it's the fact that scam or hacked attacks are so advanced as much as the protective tools in bitcoin but then we have a big and unbroken solution which is storing your assets offline in an airgapped devices and cold wallet, this is quite a big way to say that bitcoin is now less risky once you have this offline wallet well managed for your bitcoin safety.