It wasn't my intention to strawman you. If my interpretations of your arguments are incorrect, I have absolutely no idea what you're trying to convey, except possibly a big "It's complicated!" - which I don't disagree with, and if that's supposed to be a counterargument, it's misdirected.
As for people discarding evidence, proving "Brand A of universal healthcare is Bad" doesn't say anything about brands B-Z - again, my point is that you seem to be suggesting I should focus on implementation (or is that a strawman?) details rather than the intentions of that implementation. Disproving implementations does nothing.
For example, I could argue (ignore the truth value of this statement, please) that the PPACA necessitates or enables Death Panels, but this isn't an argument against universal healthcare, only one particular -implementation-. It doesn't matter whether it's true or false for purposes of arguing about universal healthcare more broadly.
As for people discarding evidence, proving "Brand A of universal healthcare is Bad" doesn't say anything about brands B-Z
There are obviously possible counter arguments that demonstrate that a vast majority set of possible implementations are bad. The possible implementations of any intention are likely to share a number of crucial parts. There are only so many ways to get to a place. E.g. If I think more health care harms health outcomes as much as it helps then I am going to oppose any implementation that involves subsidizing health care. And...
As Multiheaded added, "Personal is Political" stuff like gender relations, etc also may belong here.