After seeing that part of the article, I was hoping to get a broader range of opinions on whether that concern is justified, instead of falling victim to confirmation bias based on a single article from someone who might have his own preconceived slant.
I don't have as broad an experience as some here, most of my time playing has been with one group. However, I've sat in one-shots (with aforementioned 8-year olds, teens) and I listen to a number of live-play podcasts and that initial "how do you do this" is definitely there, but it really does fade quickly. Then again, there are posts on this here forum by people saying that their group just didn't get it. I guess it's a mixed bag? Given most of us here are fans of the system, it might be difficult to find dissenting opinions.