Your argument hinges on me being extreme in my position, when in actuality I am not. I have not said anything nearly as absolute as you've implied. For example, I don't believe me using the words "lazy" or "wasting everyone's time" were an example of what dang refers to as "jabs" -- I was describing an activity. My words were not used as personal insults, but as descriptions of behavior. It is lazy to ask for sources on HN comments, and it is a waste of everyone's time, for the reasons I specified. These aren't insults, because they're specific, and directed at an activity, rather than a person, and I provide reasons for why those activities are as described.
I'm sure some SMEs do make the mistake of posting on HN in an elaborate and detailed fashion, as another example. I've never said it's impossible, that'd be an absurd thing to say. I just said it's not in a) their best interest, and b) many won't for the reasons I outlined.
Coming to HN for the reasons you do is an absolute and unambiguous mistake. What you get here is bad quality, for what you're looking for. You can get much better elsewhere, in the form of blog posts, articles, wiki pages, published papers, etc.
I'll repeat my thesis -- HN holds value as a "back room" where experts can speak without the same rigors with which they usually have to speak. There is value in informal discussion, and that's what happens on HN. Citing sources is a waste of time on HN, because you shouldn't take anything you read here at face value.
Besides, next time you're in a conversation, are you really going to say, "a post I read on HN said..." as a way of citing the source of your knowledge?