I agree that none of these people need to know STEM stuff to a good level. I see the point of school as exposing kids to all sorts of subjects to let them find

I agree that none of these people need to know STEM stuff to a good level. I see the point of school as exposing kids to all sorts of subjects to let them find out what they like and what they are good at. I'm really bad at art. I got a passing but bad grade. Same in languages. Good grades while learning grammar and such. Bad grades when it got to reading Shakespeare and Goethe. I got good grades in math and some other STEM stuff and it interested me. This obviously influenced my choices for university. It should (and I think does) influence choices for people that become electricians too. If you are bad in math and physics please don't become an electrician. If you are reasonably good at both and you like working with your hands by all means become an electrician!