Perhaps you're right about managers, but that wasn't my impression, nor is it the impression of the authors of the Computer World article: "Rothwell points out that Google's co-founders, Larry Page and Sergey Brin, would both be classified as non-STEM managers by the Census". They may not be technical managers, but their technical background is entirely relevant to the management duties. Lots of people in roles like that.
I imagine it's much the same for education. As an example, I am faculty in a business school, but I teach technical courses (programming, etc.) within that school. I expect the fact that I work for a business school means I would be counted as non-STEM.
Dunno what planet your last question came from - bizarre. Maybe re-read your posts before pressing the submit button?