Yeah, and thanks to this, you end up with a "beast" like Magento, written by "experienced" programmers, and then you have novices tasked with writing themes and components for it, but it doesn't work that way because the "beast" is not "black boxed" well enough for the novices to ignore it. (I keep quoting "experienced" here because the example Magento is just "Java written in PHP" and I'd fire anyone turning up this type of code.)