And a lot of them also just didn't have the opportunity to learn it but are easily smart enough to pick it up when their ability to make a living depends on it.

Let's say 10% of these working class people just need a push to discover they're actually decent at coding/devops/admin/etc. 3,500,000 truck drivers means an additional 350,000 people competing for IT jobs. Now factor in all the other people employed in these sorts of jobs. There's going to be a huge glut of incoming "cheap" labor when these sectors become more automated. I don't expect them to be competing with people like Linus but they're sure as hell going to be competing with the neighbors kid that went to a public 4 year school for a CS degree because the job prospects were good.