The exception, of course, are the poor and lower working class who have no technical expertise or training, or would be unable to learn same... for those individuals the prospect of a manufacturing job is a step-up.
Furthermore, those kinds of jobs are not long for this world. They're inevitably going to be automated away and the replacement jobs robotics maintainers are not ever going to be in numbers great enough to replace those manufacturing jobs. It's beyond stupid especially when you consider that the labor market was already incredibly strong at ~5% unemployment.
With gig work you get none of that.
I don't doubt part of making America great in their minds includes bringing debtor prisons back too.