Truth is a quality of a statement, not of a thing. It refers to the accuracy with which the statement reflects, or corresponds with, objective reality.
But isn't saying that there is an objective reality saying that truth is a thing, and that objective reality is that thing?
I'm trying another way to skin this, as we've enjoyed this discussion together previously. How I see this, as best I can, is that there is Truth as an absolute, and truth as perspectives of that Truth. It would seem you have to agree with this, as you attest that there is something that stands outside the relative perspectival truths we as humans engage in every moment of every day. There is some "measure" of Truth, with a capital T which you call objective reality. Would you agree with that?
So it uses the most objective test available to us; but our concepts of what such an accurate statement may be will vary with time and place, so truth, or at the least many truths, will vary with time and place. As I may have said above, it was once true that the earth was flat, that light propagated in the lumeniferous ether, that the earth's crust was unitary and solid; but now it isn't. We can apply our version of truth retrospectively, but that won't alter the past, merely our perception of it.
We can understand today that the eyes that people looked though then shaped how their minds saw and understood the world. Based upon the available knowledge and insights and tools with which to understand the world, they held many things to be true, which we no longer do today. We also have to acknowledge the same can and needs to be said of us today.
While our understanding takes into account other information which shapes the eyes through we see and understand reality, that goes beyond theirs, for all intents and purposes their truth for them, functioned in the same way our truth does for us today. And that will be true of tomorrow when their eyes reshape the corneas of our collective eyes and see deeper and further and wider than we do today.
So objective reality for them with their knowledge, was seen and held as objectively true for them, just as we have an idea of what objective reality is today. Are we more in touch with that? Are we as far away from it, as they were? Are we anymore in touch with objective reality than they were, ultimately?
Would you agree with these points, or differ so far?