There are many reasons politics is a popular disad on every topic, one of them is that it is generally a quick way to get to nuke war. No matter what the issue is, if its on the presidents agenda its a safe bet there will be people making hyperbolic statements about it. While most disads/advantages are always exaggerations, the impact evidence selected to read for politics is generally some of the worst.
That the evidence is bad, and more specifically that it is often biased, is an issue frequently brought up, less frequently focused on, and even less frequently a round winning issue. It should be.