Your assertion that not a single person thinks this is one that would require truly extraordinary evidence. People believe in evil space lasers controlled by the lizard people. It is fair to assume that even amongst crazy beliefs, there are at least a few people who believe it (or are at least willing to claim so online)

I've met plenty of people who assume "legislation that requires X benefit" is a pure good. You can explain to them how this is false, and they usually feel a bit silly for missing the obvious here, but they absolutely had that belief.

I'm really not sure why you would possibly think this is some straw man argument.