[JdeBP]

> When it this last time you logged into a box and /bin/bash wasn't an option?

A few hours ago; and before that, last Wednesday. The latter says:

    JdeBP % /bin/bash
    zsh: no such file or directory: /bin/bash
    JdeBP %

The Z Shell is an add-on here, too. /bin/sh is the Korn shell. No, it's not OpenBSD.