If you have corruption or super long reboots on brief power loss, you have a bigger and unnecessary problem, because UPS can also fail and for many applications a brief service loss is otherwise acceptable. For example, I often handle California power outages by running an inverter off my car and powering up my home network through a cord run through kitchen window. If my NAS got borked in between, that would be very unfortunate. Your point stands in regards to equipment like security cameras where continuous availability is the point. But would a Raspberry Pi usually be the best choice vs special design equipment with built in backup batteries and low idle drain or say a cheap Android phone running an appropriate app?