Interesting analogy, but reasoning by analogy is fallacious. Also the bit at the end in which he says that human bodies aren't expected to grow to 3 or 4 meters tall, so why should we expect the economy to grow like that, is particularly flimsy.
This is a metaphor, not a proof. I happen to think it's a pretty good metaphor, but still...
This could use a spell check. I was uncertain about a few, but I'm pretty confident that "sacralize" is not a word.
Spelling things correctly is pretty much a solved problem; the automation is there.
Your confidence is misplaced. It's a 1930s neologism, though an unpopular one. Still, I like it better than 'valorize'.