You just described these jobs as "low value", so what valuable work experience can be gained for teens? What are the work hours like for teens? Is the work environment safe enough for teens?

Teens aged 14 and above are already able to work relatively long hours under current child labour laws, so why are you speaking as if teens in the US are forbidden from any type of work? https://www.oshaeducationcenter.com/articles/child-labor-law....