Well I can agree with that, but that's not the same thing as being incapable of doing it. Both of my parents could easily install Linux, it's infantilizing to argue that they can't fill out a user wizard and select a drive to wipe.
You are vastly overestimating the percentage of the population that knows what a "drive" is. Not saying that's a good thing, but it's the reality.
This is funny. I have an HP PC that has an option in the BIOS to "prepare for RAID" or some such. I wondered what that was, so I turned it on. I had Linux on it at the time, and nothing happened. I shrugged and just forgot about it.
Fast forward a few months later, when I gave this PC to my dad. He installed Windows on it, then started thinking the PC was somehow borked: "the installer sees the drive, installs, reboots, then it fails to boot". I was shocked, that PC worked perfectly.
Then I remembered about that setting, told him to untick the box in the BIOS, and he was off to the races.
This doesn't mean if someone gave me a manual car I wouldn't try to learn.
If your around a bunch of car people then it's much easier to over estimate how many people will want to drive stick.
Honestly for your average home consumer, there isn't much need for a Windows PC now days.
I say this as a decades-long Linux user (who has tried to evangelize it many times).