Don't be disingenuous - you were attempting to overrule a reason based conversation with an emotional call to the notion of universal genetic equality.
(So I dismissed you with a sarcastic quip.)
That's not how evolution works, no matter how unfair you deem it to be.
Life does not give a shit about fair - all that matters is what survives long enough to proliferate.
Feelings be damned.
The genes that convey contextually useful characteristics (although generally inclined to spread rapidly) are not at any point evenly distributed.
In some context genes that were useful in ancestoral context loose their use, or even become a burden.
Genes for intelligence may increase the ability to handle novel situations, but they also increase energy utilisation - which makes them a dietary burden.