If the original post had said that population growth needed to be stopped, I'd have agreed with it. But that's not what it said.
The whole thrust of that comment and the ensuing conversation is the nature of economic growth. That's not "semantic games," that's a different topic.
I re-read just now and yes, you're right. Sorry about that.
Never mind the details of the economy, population growth is the killer.
As long as the net ecosystem gain per person is negative rather than positive we are accelerating at a wall.