

I agree that it’s less-critical than it was at one point. Any modern filesystem, including ext4 and btrfs, isn’t at risk of filesystem-level corruption, and a DBMS like PostgreSQL or MySQL should handle it at an application level. That being said, there is still other software out there that may take issue with being interrupted. Doing an apt
upgrade is not guaranteed to handle power loss cleanly, for example. And I’m not too sanguine about hardware not being bricked if I lose power during an fwupd
updating the firmware on attached hardware. Maybe a given piece of hardware has a safe, atomic upgrade procedure…and maybe it doesn’t.
That does also mean, if there’s no power backup at all, that one won’t have the system available for the duration of the outage. That may be no big deal, or might be a real pain.
Yeah, that’s probably a fair answer for some folks and systems. Depends on what your system is doing, your risk tolerance, and what money you’re willing to put into the thing.
If I didn’t have a backup system in place, say, that’d be much higher on my list than trying to ensure power isn’t cut off unexpectedly during power outages.