What a strange attitude. It certainly is not anyone else's job to maintain the home I own and live in. That is my job. If something breaks, I don't get to tell someone else that they have not done their job. I am responsible for fixing it. Yes, I can delegate a specific fix to a professional electrician or plumber, but that is a project-by-project choice.

If people want to approach life by hiring out every little thing, they can certainly do so, but those choices do not make my home maintenance someone else's job.

I guess his point is

what happens if there's no one left who knows about plumbing and electrical wiring?

but yeah, i dont think that's gonna happen like that