The question I was trying to answer wasn't whether they were right, it was whether a rational actor could hold those opinions. That has a lot less to do with factual accuracy and a lot more to do with internal consistency.

Oh, right, I see what you mean. Sure, people can disagree with each other without either being irrational: All that takes is for them to have different information. For example, one can rationally believe the earth is flat, depending on which time and place one grew up in.

That does not change the fact that these questions have a correct answer though, and it should be pretty clear which the correct answers are in the above examples, even though you can never be 100% certain of course. The point remains that just because a question is political does not mean that all answers are equally valid. False equivalence and all that.