I think the more accurate analogy would be about the people who build and sell vacuums, not people who “plug them in” i.e. the end users.
The technology that underlies vacuums is a lot more mature and stable than those that in modern software development. So even if modern-day vacuum engineer doesn’t understand AC at the same depth as their predecessors, it’s less likely to be the Achilles heel that the author is referring to for modern devs having little understanding of computer technology.
The technology that underlies vacuums is a lot more mature and stable than those that in modern software development. So even if modern-day vacuum engineer doesn’t understand AC at the same depth as their predecessors, it’s less likely to be the Achilles heel that the author is referring to for modern devs having little understanding of computer technology.