Most “unskilled labor” is heavily skill dependant. You wouldn’t want a chef, builder or painter who didn’t know what they were doing. And for production: machinists, mechanics and foremen make or break profit with their skills.
So what’s a better name for these jobs?
Edit: I have been told that plumbers don’t qualify as unskilled, and as such they have been exchanged for painter.
FWIW I’ve never heard trades/factory jobs be called “unskilled” before. Only things like cashiers, servers, etc., which I believe are called that because there’s really no prerequisite (education or experience) to be immediately “good enough” to do the job