[throwaway894345]

> It's common to bind-mount various system directories or UNIX sockets into the container.

it’s not that common, in production systems anyway.

> Also, does it matter when you're running a full OS inside the container anyways?

Containers famously don’t include an operating system. They use the host’s kernel.

> Hosting providers is a tiny slice of the pie, most Docker users are simple end-users looking to run random internet software. (E.g., Docker is the only way to install third-party software on LibreELEC, a simple media center OS for the living room TV.)

I don’t believe this is true. I would wager that the overwhelming majority of containers are running in the cloud or in data centers.