“It is not a truth statement so it does not have a truth value.”
“it’s so obviously true that we should care for other people?”
Which one is it?
First of all, asking which one is it makes absolutely no sense because these two statements have nothing to do with each other. The first is me explaining that "well being" by itself is neither true or false because it's not a claim, it's a thing we are using to judge actions against.
Regarding the second sentence, you asked me whether it is obviously true that we should care about other people and I replied "it is to me". That is a very simple way of saying it is in my subjective opinion. English 101.
If one thing is clear in our discussions it's that you seem to be incapable of absorbing nuance. Everything to you must be one thing all the time or something else all the time. Reality is not that simple. Something can be true in one sense and not true in another so context has to be understood and taken into account.
This is the case when we talk about truth and objectivity. As I started to say before, truth is nothing more than an assessment we make. There's generally two different types of truth; I'll label them internal and external.
Both types of truth follow the same process; it's a comparison between a statement and on object. If the two match, we call that true. If not we call it false. The difference between internal and external is what we are comparing the statement to.
External truth is when a statement is compared to reality. i.e. "the earth is flat". To address this statement we recognize the definitions of earth and flat, form a concept of it, and then check that concept against reality to see if it matches.
Internal truths are when a statement matches to it's own premises. If we're playing basketball and I score more points than you I win. The statement is true because the premises include the fact that the person who scores more points wins.
External truths are objective, full stop. Internal truths are only objective within their own premises, but the premises can be changed. There is nothing that says the person who scores the most points wins, that's a human construct so it can change and in fact we have invented many games where the opposite is true. It is whatever we say it is.
Before I continue, what part of this do you not understand or take issue with?
So if someone were to assess that the earth was flat does that make it true?
It does in their mind, but reality says otherwise, at least according to my mind and I'm willing to bet yours.
The fact that a statement is objectively true does not mean every person will believe it.