How so? They're easy to set up, especially with a compatible router.

I mean... why is it hard for the majority of users to use linux?

Why is it hard for the majority of users to use a password manager?

Because most people on the planet are busy and don't give a damn.

Right, so it's not at all out of reach. You can configure your OS to use a VPN in under a minute, in my experience. Maybe five, if you were following directions.

It also takes a few minutes to change your smoke-detector batteries...