This happened to me a few weeks ago. I felt that once a question had been flagged as - 'encouraging a discussion' - it seemed like every question I put on afterwards was getting flagged for this. Even although it was obvious by questions were in the main 'yes' and 'no'. So I didn't aks any questions for a few days and then went back and seemed to be okay.
But it is really irritating! And I agree, the majority of questions on here you can't help but have a discussion about it. In addition, I like the forums, but often youir question will get taken over by a couple of hubbers who then go off track - some even have a private conversation - and you never really get the response that you want.
Forums are ok for a long debate and so on, but I think the 'encourages discussion' aspect of the questions is a bit silly and annoying!