Well, it's true. In a world where code is commoditized, a PM who knows exactly what the customers' needs are will be much more successful than an engineer who does not. Not sure what is controversial about that.

A test doesn’t prove much.

Highly experienced programmers seem to have a hard time understanding this.

Why do we have tens of thousands of test cases and we still find new errors constantly? Why is our software so bloated and slow? We do we still have security breaches?

LLMs can be useful tools when guided by experts. I don’t think a PM with a dream is going to cut it in the long run.