Agree, a central supply with a 3A MOSFET for control and a PTC for basic protection would give a lot more functionality and reduce customer downtime and smart-hands touches.
At that point what you're describing has little resemblance to a hosted RPI though, the complexity justifies just making something custom that's better suited to the task than shoe horning Raspberry Pi hardware into a rack.
Sorry but that’s bullshit.. they’re describing a basic power switch (even simpler than a PoE hat) which is nothing compared to the design complexity of an MCU board with memory, peripherals and chip level power conversion.