[yummyfajitas]

You are conflating a property of the claim itself (violating the laws of physics) with a straw-man property of the person making the claim. They aren't the same thing - one enables a simple proof by contradiction, the other is ad-hominem.

Further, your "climate change, it's all bogus" ad hominem isn't even a real claim that skeptics make, and is more more indicative of your thinking than of reality.

I get the impression you are just looking for ways to dismiss arguments which make you emotionally uncomfortable. Consider religion instead, it's a lot more unapologetic about simply declaring who the heretics are.