We're rebooting rpis every 3 hours... in production...
Client bought too many to change.
Client bought too many to change.
I know of a museum with a huge Pi deployment and they don't have issues like that at all.
It's not like they overheat and lock up in 4 hours, it's more like randomly in a day or two. But since they're just monitoring stuff every couple min, it probably felt safer to reboot all the time.
Not sure exactly about the decision process that went there, I just did part of the software running on them. But they definitely weren't stable long term.
So your pihole doesn't heat as much as the pi in that kiosk even given the same room temperature. And then, the temps inside an outdoor box in the sun can go way up too.