I think that just tells us that many people treat opinion polls as an opportunity to say what they approve and disapprove of, whatever the actual question being

I think that just tells us that many people treat opinion polls as an opportunity to say what they approve and disapprove of, whatever the actual question being asked is. (And that's arguably rational behaviour, if you interpret the opinion poll question as saying "would you like to help give the media a stick to beat X with?")