You moved the goalpost here, buddy.
American manufacturing grew in the last 20 years.(and probably before that)
Automation didn't produce the increase in jobs, to match population growth... But a claim that US manufacturing shrunk is false. No one in this thread made a claim, including you, that this is about "global scale". You just threw in this argument to avoid accepting the fact that you're wrong.
I'll always be waiting. Best of luck!