I would add that just because individualism and humanism often fail to diving Truth doesn't mean they are incapable of doing so.
And while I also believe in absolute Truth, I would hesitate to claim we are qualified to always see it manifest, such that it may sometimes appear to us as being "relative." I believe in the perfection of His plan. And yet "bad" shit happens all the time. So, either the plan isn't perfect, or I'm not qualified to see the big picture. I know which I believe to be the case.