The fact that they are PMs is a tragedy of circumstance, not a moral failing. If they are willing to go on-call for their work they will lose that childlike innocence and become engineers very quickly.

> they will lose that childlike innocence and become engineers very quickly.

I don't think so. Not everyone has an engineer mindset (or a PM mindset, for that matter). There's a reason these people ended up where they ended up.