It's interesting that other people find that.
I've noticed it myself, but never thought that it was an Aspie thing, I just though the people I was dealing with were particularly annoying!
However, there are two sides to this. One of our quirks is that we can get so fixated on explaining something that we totally fail to realise the other person has fallen asleep!
However, yes, I agree that obtuse answers annoy me. I want a simple straight forward answer to a simple question. "Can I make that fit in there?" (for example)
Instead of "Yes" or "No", I get told that I should use something else, make this bigger, twist that around.... I just wanted a yes or no answer! I usually end up confused, and when they finished, I ask my question again. This gets the other person annoyed, because they thought they'd answered it...
On the flip side to that, I might have a problem that, in order to explain why I need to ask it, I need to give some back-ground information. So I start by explaining the back-ground and the person I'm trying to ask assumes that I am asking something about this and goes off on a tangent, explaining stuff I already know, or sometimes going somewhere that isn't actually relevant because it's what they thought i was asking.
It can be very frustrating!