> most people don't really understand the market they are in, the competition, their own products, the customers etc well enough to actually make good decisions

"Product" studies this data and tells engineers what features they want. I am rarely instructed to A/B anything...excepting when it's defensive, to ensure the first rule of "don't interrupt the flow of money" is upheld, if at all. Most of the features are obvious improvements anyway (determined from plain conceptual planning, manual testing, and personal usage).

ofc I don't understand the customer or market or anything else. I'm paid with the expectation that I'm not going to share an opinion about it, especially since am never exposed to the raw data and inner circle decisioning except during a quarterly meeting...maybe. This is part of why AI is so successful. Humans in large organizations are specialized with little creative input and lots of mechanical process. Coding is largely a mechanical black box (turing machine) from the outside looking in. It works seamlessly because I don't need to know about the things product wants, so the AI doesn't know and everyone carries on faster than we were before.