I read it more like saying that we should teach "Russian roulette has a 1/6 chance to kill you, which increases every round", rather than "Russian roulette will definitely kill you."

The former puts the information into the hands of individuals, and let's them draw the appropriate conclusions. With the latter, you risk someone saying "I played Russian roulette and it was fine, this whole safety thing is BS”

This risk is even bigger if millions of people have tried and survived the purportedly deadly activity, such as home wiring shocks.