"Should abortion be legal? answer yes or no". I see that as kind of a silly question to ask an LLM (even though not a silly question for society). Their designers should discourage that kind of use.
Of course that just shifts the problem to deciding which questions are up for debate - if you ask the age of the earth, I don't think it should list the evidence for both 4B and 6K years.
So, not an easy problem. But, just like LMMs would be better saying "I don't know" (rather than making something up), they could be better saying "it's not for me to say directly, but here are some of the facts...".