Turning it off and on again is risky. I recently upgraded a robot in Australia, had problems with systemd, so I turned it off. And had to wait a few weeks until it could be turned on again, because tailscaled was not setup persistently, the routing was not setup properly (over a phone), the machine had some problems,...

High risk, low reward. But of course the ultimate test if it's properly setup.

But on the other hand, with my tiny hard real-time embedded controllers, a power cycle is the best option. No persistent state, fast power up, reboot in milliseconds. Every little SW error causes a reboot, no problem at all.