This is a silly statistic that manipulative people drag out to imply the answer that they want. If you asked people who work in factories right at this second, 75% of them would say that they didn't want to work in a factory. If you ask people who work any job, and ask if they would rather not be working, 75% would say yes.
It kind of goes with the weird idea that illegal immigrants actually love to clean toilets and work in fields for slave wages.
> when I ask “so you’d prefer to work in a factory?”
...to your upper-middle class friends who make six figures.