You are correct. Everything else that happens as “business”: service jobs, food industry, sales and so many others only swap existing wealth around.
We DO have a government that manufactures money to inflate stocks and to release in trickles to the economy through spending and food stamps. That will only go so far, tho.
The commenters at the article make more sense than the author.
If you don’t have enough of a manufacturing base to produce items needed for national defense, then what? Have some panty-waisted desk jockies outsource it to where?