At some point, everybody had to learn what a hole saw is for the first time.

I would guess that most people who live in houses don't know what hole saws are. Your assumption that everyone does -- or even needs to -- comes off a bit arrogant and out of touch.

Does homeownership not imply major participation in house maintenance in America?

Do you just have "handymen" do everything for you? Do you only interact with your physical environment in superficial ways?

America is a very big place, and homeownership looks very different depending on the type of home. Maintaining an old, free-standing house with well water in a rural area is a completely different experience from living in a newly built condo. People take on different responsibilities when they become homeowners, and their knowledge varies accordingly.

Maybe you can talk to the guy who thinks that's exactly the solution: https://news.ycombinator.com/item?id=43086440

But "living in a home" and "homeownership" are not the same thing. Everyone has to learn something at some point, people aren't born holding hole saws.