Agree, the quality part of the book is hard to grasp. I get that some written works are good and some are bad, that it is hard to qualify why yet there is a general consensus around it but I haven't been able to distill any deeper meaning than that.

However, the discussions regarding "gumption" and separating abstractions from reality when needed (i.e. "the carburetor set screw") as well as several other great lessons from the book have really helped me fine-tune my thinking. I think reading this a few times in your 20s is a fantastic time investment.