We don't teach children how to make fire with sticks, and most of us probably couldn't do it either. We, as a culture, literally forgot the first step that enabled all our industry. Is that a problem?
It's almost impossible for me to believe that even 1% of HN readers can start a friction fire.
And then you'd have people who learned in some outdoor survival course, etc. Obviously this will vary from country to country, but surely it's higher than 1%?