Bull. Different kinds of facts are subject to varying degrees of interpretation. So no, facts are not absolute in all cases.
A fact is an undeniable statement of reality. It is, by definition, absolute. In any case, even if that were not true then stating a fact and making a personal decision on a moral matter are not the same.
Our perspectives on what we each may think morality should be is subject to relative contexts, and my philosophy professor knew that. But that wasn't his point.
No. His point, as you pointed out, is that dumb retort to anyone who states that morality is relative. Being 'Oh, so you are
absolutely sure about that (snigger, snigger). Which I actually saw a couple of days ago when Charlie Kirk thought he could raise a laugh at some student's expense when the student questioned him about relative morality. And he did. Guffaws from all his supporters in the crowd (maybe they had the same professor as you). And the student very politely pointed out the fallacy in asking the question. That morality and facts about morality are two things that are not the same. Kirk deflected.
I think you're conflating the decision making process and its motive with epistemic relativity. If it's wrong to kill innocent children within conditions A, B, C, & D, then it's at least objective to say so regardless of whether or not someone else's moral decisions are retarded by their own individual limited comprehension. In such a case that we do have an individual who intentionally and carelessly flouts those objective conditions, then it is an absolute moral truth that he is a sociopath and not merely a subject of moral relativism.
You have to be careful about using extreme examples where all reasonable people would agree that something was wrong and then conclude that it must therefore be absolutely wrong. Again, this occurred in the Kirk video. He asked the student if he thought that some atrocity was absolutely wrong. He said that he didn't think it was. Gasps from the crowd. But he went on to explain that he thought it was very wrong indeed, but as he didn't believe in absolute morality, the question 'Is it absolutely wrong' made no sense.
If there is an absolute morality then a moral decision is either absolutely correct or not (I don't think it's reasonable to argue that some aspects of morality are absolute, and some relative. That makes no sense). So we need to look at examples which are not cut and dry where the answer is not obvious. So...you send a child to her room because she has been naughty. That's reasonable. But you keep her there for 4 hours? Is that morally acceptable? You keep her there for a week. Well, we're getting to a situation where most people would call that immoral. Add the fact that you only feed her bread and water.
At some point, if morality is absolute then there will be a point where it becomes wrong. You can't have an absolute morality where it's kinda wrong. Or nearly wrong. Or it's OK right now, but gradually becomes less acceptable. That's not absolute morality. So who decides on the length of the punishment?
In other words, there is no room on a humanly devised moral continuum for sociopaths and psychopaths.
Yes, there is. Not all sociopaths and even psychopaths are axe murdering maniacs. There is most definitely a continuum. Here's a list of 15 signs that you may have sociopathic
tendencies.
A sociopath is someone who displays manipulative behavior, a lack of empathy, and impulsiveness—key traits associated with a severe form of antisocial personality disorder (ASPD). Sociopaths do not have a fully functional conscience and tend to be manipulative, exploitative, or even abusive...
www.choosingtherapy.com
So why don't we take an example from public life that we both know and see if that person can be included in our 'humanly devised moral continuum'. Let's take Trump. And gee, whaddya know. He seems to fulfill almost all the criteria. I might leave that with you for your consideration.
Moreover, there seem to be competing definitions for "moral relativism." The one I hold is the following:
Moral Relativism asserts that moral standards are culturally-defined and therefore it may be impossible to determine what is truly right or wrong.
ethicsunwrapped.utexas.edu
I agree with it completely. And as regards the kid being sent to her room for X amount of time, I'll note that it says this:
'Moral relativism is on the opposite end of the continuum from moral absolutism, which says that
there is always one right answer to any ethical question.'