>If there’s only ONE objective/factually reality,

There isn't though.

There can be objective facts. But there are SO MANY facts. Sometimes people lie. Sometimes they get bad data. Sometimes the look at the wrong things.

Your simplification to a binary choice of a social issue isn't really helping. And, there is no "binary choice" what AI produces writing and art at the moment. There is no OBVIOUS answer and no right or wrong answer -- just people saying "I like this one better."

>I imagine a true AI would know the scientific method and execute it perfectly.

You don't seem to understand how current AI works. It throws in a lot of random noise and data so it can come up with INTERESTING results. An expert system, is one that is more predictable. A neural net adapts, but needs a mechanism to change after it adapts -- and what are the priorities? What does success look like?

Science is a bit easier than social planning I'd assume.