Yeah the reflexive anti-PM anti-management stance posted above is typical here and of devs in general.

In theory, some engineers think they are perfectly capable of doing all the PMs work and all their own.

If they’ve never worked with a truly good PM, that’s a shame, they’d likely get more work done in a more timely fashion. I’ve worked with around 10 different PMs, the best kept stuff on track and aided with collaboration, reqs management, soft skills, handling tough customers, etc. they free up devs to do more dev work and less other work.