I get the mindset and am very much a read-the-code person as well but my go-to example for this kind of thinking is that reading the code in lieu of a written summary/guide, etc is like trying to understand a book where the chapters and paragraphs are mixed around. It's possible and the ability to do so worthy of pride but it's clear that a succinct summary in one place would be far easier and time-efficient.

Not to say that heavy documentation like this is perfect of course. It just seems like the complexity of the read-the-code solution is sometimes glossed over.