I think the line is “is there someone here who can answer the question without looking anything up”.
And I’m not sure “go away” is the right thing, but it’s honest to say that we’re not always the best source of info on these things.
But I don’t think anything is so drifting so far off the core ground so far.
Maybe impolite isn’t the right word. But user feedback is really important when you’re building things, so it’s probably better for the developer to know that there’s a whole category over here. It’s also not very hard to subscribe to a tag and get emails about them, without actually having to monitor the boards, so it’s not that bad.
The other thing is that people who aren’t involved in projects often give really bad “tech support”. The number of things I’ve been told INLA can and can’t do based on some third hand information from someone who knows some stuff but not everything would surprise you (well, probably not you, but people who don’t develop software :p)