It's not as outlandish as you're attempting to paint it as, considering the author is assuming that capital interests remain in control when making such a claim.
And under that assumption, it's a bit crazy to think anything but depopulation will happen. Everything points to it being in their playbook; the blatant mishandling of COVID (which is far from over) by the uniparty being one of many glaring examples.
I agree depopulation will happen by simple resource limitations but I do not think it is any part of a playbook. Hanlons razer : Never attribute to malice that which is adequately explained by stupidity.
Many wish there was at least malice because then there is a narrative, the reality is probably much more muddled and messy.
Hanlons razor has limits, as exemplified by declassified CIA etc horrors over the decades among other things.
Capital incentives make people behave like animals, and even well intentioned ones are often coerced by said animals else face the ultimate price.