It should also be noted that economists aren't uniform on the topic. An example is that some economists never discuss behavior as if it's irrational and some often do. This just makes it all extra confusing. A lot of economists don't take the logic as far as I've presented here (but still some do), and this is a big part of why the stuff doesn't make sense.
The field has far too much quantitative talent and too little qualitative talent. Graduate programs prioritize non-economics quantitative talent (to such a degree that it has shown itself as a significant problem in economics at the political level), and most that work with economics in business misuse it all the time (the most common example is saying "demand" when they mean "quantity demanded"). But that's a whole nother can of worms.
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