I don't think it's particularly rational or reasonable to say the human mind is the ultimate source of all truth.
- SBF
(strawman argument)
Who's saying the human mind is the "ultimate" source of truth? I feel like you're just making up straw man positions so you can attack them instead of dealing with the real issues being raised on this thread.
Truth is the label we apply to claims that match reality. Individual claims are either true or they are not true. When you say "ultimate truth" no one knows what you're talking about.
This would be like me making up some non-existent problem and then trying to use it to disprove Yahweh, "God can't account for Intrinsic Theocracy therefore all beliefs in God are self refuting."
Either the human mind is the product of undirected evolution, in which case there is no reason to suppose it has a particular capacity for identifying truth. Or else the human mind is the result of divine direction
(false dichotomy)
Having the ability to process information is hugely beneficial to living organisms. No supernatural appeals required. Creatures that understand their environments have a distinct advantage over creatures that don't understand their environment. Wolves that know how to can track a herd of bison are going to fare better than the wolves that can't track the herd of bison and/or that do so incorrectly.
Thus wolves that have a better understanding of reality are more likely to raise offspring. And more likely to pass on that ability. Whereas the wolves that don't understand reality as well are less likely to raise offspring and less likely to spread their genes.