Not in those exact words, no. Your message is clear though; safety nets need a constant supply of young workers (at least as they are set up right now).
Why do we need to sustain a larger population? Our natural resources won't last forever, which should be obvious considering we now have to basically break into mountains and shake things up to extract oil locally. On what metric do you make your claim that growth allows people "a sliver of the pie"? Do you think that $X divided between three million people is better for those people than $X/2 for one million people? The poorest are those with the least competitive value and the most desperate for crumbs. Increasing their numbers benefits no one other than the elites looking for cheap labor. Profits aren't "infinite", but they are indefinite. Natural resources are quite finite until we discover some amazing new recycling or matter-out-of-nothing-inator.
Japan, the definition of a healthy nation and economy with the highest debt/GDP ratio in the world, negative interest rates, the longest hours worked, and the highest suicide rate, lol.