What I'm trying to get to here is why SE acts like they do in regard to PvP vs feedback. What is the reason for the ongoing 1-way communication, and the vague replies at best?

Are they trolling us?
Are they incompetent?
Are they shy?
There are a lot of possibilities, but afaik, unless you seriously research (like, serious serious, private detective etc.), all you can do assume/guess within reason. If you manage to come up with a reasonable explanation, it may help getting through to them (but if my assumptions are correct, then we're dead in our tracks as of know).