I don't understand the notion of moving backward in order to keep jobs for people. I get why people say they want that (fear of losing their jobs), but I don't

I don't understand the notion of moving backward in order to keep jobs for people. I get why people say they want that (fear of losing their jobs), but I don't really understand the logical progression to getting there and I believe its influenced by: a) Practically, this imposes a big problem to future society if low-skill jobs are gone. b) I'm definitely privileged to have a "high-skill" job so my fear factor here is irrelevant. That said - if this were really a concern people were serious about, I don't see why we don't just ban cars/trains/airplanes/etc. and have caravans to do all trading once again. It would create tons of jobs all in the name of regress.