I posit that the world's population has been artificially maintained through creating artificially inflated economies using artificially-backed money.
It seems only logical, to me, that if we move to hard money, it will facilitate a reduction in population due to the unsustainability of supporting millions of people who do not participate in the workforce, but are instead propped-up by the fiat-backed welfare and social systems which are in-turn propped up by money printing.
In a 'survival of the fittest' scenario, we have created unnatural support systems only possible through fiat, where those who contribute to the system are responsible for keeping millions of people alive via forced contributions 'for the good of society'.
I don't think we should be 'depopulating' anyone nor do I believe the world is anywhere near overpopulated, but I do think this would be an inevitable consequence.