Yes, that’s how you would learn in those remotes.
Offline means that the panel tried to reach the remote for status and the command failed. This is going to be common with a battery operated remote that moves around, but I don’t recall if the GC2 firmware addresses this with the Minimote so offline errors are ignored.
The remote doesn’t receive commands from ADC or route signals to other devices, so any offline errors should otherwise have no effect on the system.