A strong trained human can do all the things you mention with less supervision and in less time. In other words if there is a lot of work for untrained workers

A strong trained human can do all the things you mention with less supervision and in less time. In other words if there is a lot of work for untrained workers, it is a poorly run construction site. In a well run construction project, trained workers clean up after themselves and installers don’t need additional people holding up heavy objects during placement because they bring proper tools, staff, and falsework with them.