Will AI taking jobs save countries from declining populations?

I’m unsatisfied by economic theories around labor economics and the need for ever increasing populations. They then double down and start promoting mass immigration as the solution. But these 80 year old economic boomers always have a copt out of their theories “ceterus parabis” like it’s supposed to make them smart by hedging but anyway it’s clear ceterus parabis doesn’t apply to any of those economic “theories” anymore because AI is the big elephant in the room that didn’t exist when they wrote those theories My question is if we become a robot and agent first driven economy where AI agents and GPU consumption does all the work and creates economic growth does that mean counties will be able to retain economic growth despite falling populations? Won’t it actually even be good if populations decline since there will be less jobs for humans left, and then AI agents will do all the care needed for old humans and corporations and billionaire class will pay more taxes as they grow and get richer from their personal AI army of worker agents to support public services? We should embrace the AI agents as saviors of humanity (and the climate) instead of doubling down on failed neoliberal agendas like mass immigration, offshoring, open borders, low minimum wages for humans, and low taxes for corporations and billionaires even as populations collapse across the world