Study Method Advocates Sometimes Discount Own Experiences

I find it disingenuous for somebody to get on a podcast or YouTube with listed accomplishments and talent skills in a specific area and then promote a regimen for you or me to also reach their level of attainment while discounting their early history of struggles that were instrumental to their breakthroughs.  Case in point: Steve Kaufmann, a polyglot who has reasonable proficiency in some twenty different languages, is someone I respect and who promotes the "comprehensible input" method of language learning.  Yet his linguistic career and narrative took off AFTER he joined his Canada's foreign service early in his adult years and took their intensive training courses in Mandarin Chinese.  I believe that Kaufmann's experiences back then taught him what to seek out during his subsequent language studies, while most of us don't possess that kind of background to know exactly what to prioritize as we follow his current system.  Still, I think his method is far and away superior to the "don't make mistakes if you want a good grade" nonsense I went through  during my high school and college years.  Still, even more pertinent to Kaufmann's experience is that learning the intricacies of Chinese writing with their thousands of different ideograph characters is a very, very steep mountain to climb unless you intentionally and intensively study them, and even then reading Chinese can be a bit of a slog...