Thanks for highlighting this. For me, OpenBSD releases needed so few fixes that keeping the system up to date wrapped around, and become more of a hassle to deal with! I'd get an email and have to manually rebuild something. Watching yet another flood of compiler output started feeling like a huge waste of time, despite only happening once every month or two.
For personal use, on debian I set a cron job and forget it. This utility hits the sweet spot to get me running OpenBSD again.
I keep running into a weird issue where my Debian servers won't shut down ("A start job is running for Unattended Upgrades") when I enable unattended upgrades as described at [1]. It is especially weird since my Debian systems are otherwise pretty bare-bones, yet the issue occurs on several of them. The solutions listed on Stack Exchange [2] seem rather hacky.