There is often a disconnect between both sides.
While anyone can learn the language of business, an MBA helps in understand their side, by teaching how executives think, evaluate risk, and make decisions.
A respected MBA also provides credibility, making it easier to translate technical ideas into business outcomes and gain support from leadership, etc etc etc.
The real value isn’t the mba itself, but learning to operate in both worlds. There is so much gray and fun things to can do once you see and can communicate both sides.
Tech-management arbitrage. That layer you describe is just talking another language, that most people in tech just don’t know. They also control the money.