So... my business school covered all of that. Probability, statistics, linear algebra, diffeq... and yes, boolean algebra in the context of gradient descent. Even Markov chains and neural nets. Needless to say, there was a lot of math.

Interviews at top business schools are nothing but partitioning and mathematical analysis. Google “business school case interviews”. Modern business is analytical and quantitative. Over 50% of my classmates came from software development or engineering backgrounds. This mix is not at all unusual.

I think your reaction may be to the PHB types — who aren’t good at any of that but they have soft skills (aka people like them) so they get promoted. Honestly the biggest truism in business is that it’s better to be liked than to be good.