I'm also surprised people actually find the contents of this blog post insightful, but I suspect it has far more to do with who wrote the article.
I mean, is it not obvious that you can take away new ideas from reading a book multiple times at different stages of your life? As a simplified example, movies with twist endings hinge on exactly that fact -- armed with new information, events you have already experienced take on new meaning. More "important" things will have more significance, but it's the same idea.
Is it not obvious that your own world views are the result of your own experiences and others who you have contact with, even if you cannot precisely remember everything that would lead to that world view?
