Let's make it easier. If I say I like ice cream, it is objectively true that I had an experience. It is objectively true that I categorize that experience as "like". There is, of course, a difference for me to "know myself" and to "know someone else." I am effectively, the object reporting on the state of the object.
Okay, I think you and
@durangodawood and I all agree on this that we can know for a fact how we've judged things. So when I say, "I like chocolate ice cream" I know that is an objective fact.
I am not saying anything mystical about Jill's experience. As you note, most of what I wrote is about our ability to assess someone else's experience.
You guys are touching on a distinction I think is important to the discussion. There are two kinds of "opinion" and I think there are a lot of folks in these threads that are equivocating between the two.
1 I say, "Chocolate ice cream is tasty."
2 You say, "Orel likes chocolate ice cream"
In 1, my claim is not a fact at all. It is purely subjective. It is nothing more than a description of my experience with chocolate ice cream.
In 2, you claim that, "Orel likes chocolate ice cream" is true because you
believe but do not
know that it is an objective fact. It is the same as saying, "Our next president will be Tom Hanks". I may
believe but not
know that is a fact because it hasn't happened (or not happened) yet, and that makes it "opinion".
In 2, what is subjective is our
judgement of the evidence for the objective fact.
In terms of morality, morality is subjective if it is like 1. Morality is objective if it is like 2.
If there are no moral facts, then morality is subjective. If there are moral facts, then morality is objective. Not knowing what those moral facts are and having to guess doesn't make morality subjective. The only thing that would be subjective in that scenario would be our judgement of the evidence for those objective facts.
That's why inserting a God still wouldn't make morality objective. Even God can't cause, "Chocolate ice cream is tasty" to become an objective fact.