I have seen several posts like these that I suspect aren't who they say they are, but I just go with it for 1-2 posts. It's hard to know what the person is really up to. Maybe a Jerk just jerking people around. Maybe a high school student or college student researching the subject, there are many other not-so-bad reasons why a person my pretend to be someone they aren't, other than just being a on line jerk.
An on line jerk will just ignore advice an say things like "We tried that and it didn't work...." and keep repeating that <U>
nothing</U> works. A person with a real problem might say that too, but will provide realistic insight\details as to why past attempts failed. But the bottom line, we can never really know for sure.