I can ... sort of understand the kind of thought that wants infinite economical growth. I don't *think* it's feasible with current constraints, but I'll admit I can't prove this. There is economic activity that doesn't involve consuming finite resources, after all.
But you definitely, certainly, positively cannot have infinite *population* growth within any given nation.
So, the people who want infinite economical growth really ought to figure out how to detach it from population growth.