One thing that popped to my mind from this article is code comments; crazy idea, what if any piece of code had to justify its existence - comment explaining why

One thing that popped to my mind from this article is code comments; crazy idea, what if any piece of code had to justify its existence - comment explaining why it is there and in support of what feature. I want to try this features.yaml approach - there is something solid there, and the acai.sh tooling looks nifty.