[kgermino]

I agree?

In both cases the control system is physically in your house. It sounds like the sprinkler system did work completely offline (though it's not clear if you'd actually be able to change anything without internet - that would be a problem if not), they didn't set up an account so the system was in "offline" mode and dutifully ran the sprinklers on the last known schedule.

For the thermostat the example was physically removing the control system, which is typically not connected to the furnace through any sort of internet connection, and expecting the furnace to know what to do.