Good advice. But most work computers I’ve used were handed to me fresh from the Apple Store and they requested I wipe them before returning at the end of my employment. Not everyone works in places with an IT department, device management systems, etc.
Doesn't stop them from legally mandating you give them the device as-is and retain all data on it.
My philosophy: if the hardware doesn't belong to me I'm not doing anything personal on it, no exceptions.
While parent may have indeed been provided an ordinary stock Apple device, Apple's "Automated Device Enrollment" program can be used to administer/manage devices even when shipped directly from Apple to employees. I got a laptop replaced at a former company, shipped directly from Apple to me. I expected to have to reach out to IT to get it bootstrapped with their management tools, but the OS install process did this automatically.