Sometimes an unclear question is posted. You have an inkling what the OP means, or you think you do. Some people in this case answer their interpretation of the question. I think this is bad practice, as the variety of answers will be confusing to most people. It also encourages poor questions. In my opinion his happened before and has recently happened again.
In the recent case the user clearly read tidbits but had no thorough understanding of the economic models. It is IMO good to explain concepts to lay people, but I think these explanations did the OP no good, because his thoughts on the matter were not organized to begin with. (He accepted neither answer.) Since then the OP has gone on to ask IMO numerous poorly phrased questions, some of which still get answers and upvotes. Some questions include "I don't buy it". This IMO sounds more like it belongs on the radio show Infowars, not like a precursor to scientific investigation.
How should we proceed when a new user posts questions lacking in - shall we say - rigour?