alt Hacker NewsPM's are generally the most irritating people to deal with in any organization. This is coming from someone who has been one - effective ones are very obviously effective, but the vast majority are glorified note takers and ticket pushers with very little ability to get anything done, whether due to lack of talent or lack of empowerment in the organization or both. I find arguing with them pointless.
The ticket pushers also range from annoying or even threatening, to "helpful ticket pushers" who maybe don't understand everything, but they keep track of tickets, documents, links to other projects and so on and make sure nothing is forgotten.