Who is in control of human destiny: God, or biology?
In other words, if post-industrial revolution mutation accumulation (aided by the inverse correlation between intelligence and fertility) will end global industrial civilization - is this ultimately a product of undirected natural selection, or is it part of divine destiny?
The answer is that it is part of divine destiny.
Biology is necessarily incomplete (it leaves out most of reality in its explanations), however we should also recognize that it does have some significant predictive validity. We cannot just forget about biology! Just that it only explains imperfectly a narrowish range of things.
So, how does the biological process of mutation accumulation fit into God's plan?
There are various possible way - but the simplest is probably that it is a Tower of Babel phenomenon: God is constraining Man's power, because He knows that Man will very probably misuse excessive power.
If Man had better used the power and capability generated since the industrial revolution (used prosperity for Christian goals), then perhaps things would have worked-out differently in ways we cannot comprehend - through non-biological factors, presumably,
However, we have misused our power - we have used power, efficiency, capability, prosperity, the abolition of absolute poverty etc - to deny God and adopt an anti-religion of moral inversion.
Clearly Man is now extremely corrupt, and will certainly abuse all his power, including any extra power he might gain - so Man must be, will be, stripped of power.
Mutation accumulation is a mechanism by which the Tower will be destroyed before any kind of ultimate spiritual catastrophe can occur (one mechanism among several).
I am not saying that the above is the correct explanation - probably it is not; but I offer it as the kind of explanation which includes both biology and Christianity.