I admit I didn't read the entire article, but didn't we already implement this engineering methodology in WordPress with actions and filters? You essentially re

I admit I didn't read the entire article, but didn't we already implement this engineering methodology in WordPress with actions and filters? You essentially register functions to either do something (action) or process something (filter), and add a priority to it (i.e when is it meant to run with regarding the sibling hooks. And no, this does not save one from understanding the rest of the code. :)