Their wage-dollars will now buy less stuff.
> Cite and example where a country did not default/print money for their debt payments and inflation went to 30%
The US has the world reserve fiat currency, so there are no examples because a fiat reserve currency has never existed before, but we know hyperinflation is a likely outcome. Now, from the experience we do have, ~30% inflation like in the 70s is the best we can hope for. A zombie economy like japan's would frankly be fantastic given the conditions.
>How does this harm a working class American that derives all of their income from working wages as opposed to assets?
Their wage-dollars will now buy less stuff.
> Lastly, address how any of the above prevents an increase in manufacturing jobs, which was the intent of the measures originally listed.
Don't worry, americans will have plenty of $1/hour manufacturing jobs like asians do now (or the nominal equivalente to $1 in a hyper-inflationary world). The US doesn't have the technical capacity or workforce to compete in high paying manufacturing any more and will take decades of pain to build.