Yeah except Bob, your uncle, is working from home and therefore needs to care about his home network security.
I also wonder how the attacker got access to Bob's home network in the first place?
If only he had the chance to focus on actual important security issues instead of constant notifications about useless noise like the temperature of his Pi-Hole.
Hmm, anything like this can be used as part of side channel if an attacker is able to influence the temperature of Bob's RPi.