I think they’d be better off at a trade school.
A guy I know works as industry liaison for a trade school that teaches repair of farm, construction and mining vehicles.
They partner with John Deere, Caterpillar, Kubota, etc.
Most of their graduates start over $100k a year.
College is not necessary the way it is currently arranged; the non-STEM classes I took were just fluff.
I think there are are now many on-line courses where a motivated learner can become a master of knowledge in many topics.
Of course some practical experience in applying that knowledge is necessary to fully master any area.