I’m not sure what you mean?
I’m certainly not saying systemd is the only way or best way to solve this problem, only that it does in fact work, despite the other many misgivings I have with it.
I’m also not sure whether you’re trying to turn this into a measuring contest, or why? My home setups are relatively rigorous for a residential setting, but they’re all based on the many many years I worked in data centers, mostly in Los Angeles which is notorious for poor power availability and stability.
That makes sense.
The last time we had a power issue and I was at my desktop I didn’t get any GUI notifications of the outage, so that’s a miss.
However the incessant beeping coming from every APC in the house was enough to tell me that stuff was about to go really sideways 😂 I was able to manually power down my desktop before the systemd stuff kicked in.