The danger in using hacks like this goes largely to what sdfg was getting at: you end up embracing a cookie-cutter mentality and ignoring the reason you're being asked a particular question.
If you're looking to make your life easier, remember that there are only so many questions that you can be asked about a particular text. Given the focus tends to be on prominent themes and often on key characters, topics are usually set in ways that are accessible and that give you a chance to reveal what you get about the text. You're far better off spending time pondering what you may be asked and why.
Simply dealing with "here's why I agree" and "here's why this topic is flawed" can lead to a mechanical response and one that shouts 'this is a pre-written essay'. There's also the risk that if you're seeking to disagree with a topic for its own sake, you'll end up veering away into unrelated territory. Better to work on developing your own ideas
