Aren't you underestimating how the form of this article makes it different from self-help tracts and LW?
It exploits the Musk cult to spread LW-ish ideas. It contains excitement and humor that makes it palatable for people who can't stomach the dry LW style. With WaitButWhy's considerable reach, it'll be seen by people who've never seen LW or self-help tracts.
This is the fourth of Tim Urban's series on Elon Musk, and this time it's about some reasoning processes that are made explicit, which LW readers should find very familiar. It's a potentially useful explicit model of how to make decisions for yourself.
http://waitbutwhy.com/2015/11/the-cook-and-the-chef-musks-secret-sauce.html