See here's the thing about that... It wasn't a bad answer, or a wrong answer, it was just an answer that you happened to personally disagree with. That's about it. Your disagreement doesn't make the answer a straw man, or a political rant, it's still just an answer that you happen to personally disagree with. If you really need evidence of the fact that it was an answer, take a look at the votes. Last I looked some 80 users thought it was an answer worth upvoting while only 6 bothered to downvote.
Now what can/should you do with an answer you personally disagree with?
You can vote, and write your own answeanswer.r Trying to argue someone into changing their answer into what you personally think the answer ought to be is just a huge waste of time and, more often than not, leads to arguing in circles.
If you have a different perspective, and think you really know what the answer ought to be, write your own answer if your answer is actually better it may even gain some votes and out do the answer that you personally disagree with.
We tend to flag comments that seek to argue with answers because they're generally not productive. This isn't a forum. This isn't the place to discuss. This is a place to ask and answer questions. So... If you personally disagree with an answer, write your own answer.
On the very rare occasion, someone may post an "answer" that really has nothing at all to do with the question. If you spot one of these, you should still avoid arguing about it in the comment section. Flag it, vote on it, and if you think you know what the answer should be, write your own answer.