"There's a consistent track record of being wrong, we should learn from it" is not garbage, it's the bare minimum for engaging with the topic intellectually and honestly.
That means that an order-of-magnitude increase in consumption, which would trivially happen is all of the earth's existing population were to have first-world consumption standards, would completely wipe away a sustainable society.
As far as I know, order-of-magnitude reductions in consumption of basic resources while keeping living standards is not something we are anywhere remotely close to achieving.