Because in many cases people don't bother giving the real answer once a comment already has an answer, especially a highly upvoted one. I'm fine with indirect,

Because in many cases people don't bother giving the real answer once a comment already has an answer, especially a highly upvoted one. I'm fine with indirect, "question-the-premise" comments, but they should be posted as comments, not answers, because they are in fact not answers.