Agree with much of this, though I think it's overly focused on the coding part. I keep seeing framing around "We used to have PMs write specific requirements which were handed to engineers to code". I've been working in tech for 15 years and haven't seen that in reality. Engineers had long been pulled into the requirement gathering phase while PMs focused on higher order Strategy docs. I've heard of places where this is true but hasn't been my experience.