The CB alerting logic is, to be fair, quite logical.
If the associated device or service has its own fault detection, then there's no point monitoring the circuit breaker because if it trips, you'll get an independent ECAM or it'll be immediately obvious that something has lost power.
On the other hand, if the CB is just one of several power feeds, or actually controls something like a bus contactor, then it's useful to know that it's tripped because your first clue might be when an automatic reconfiguration or deployment doesn't take place (AC ESS switching or RAT springs to mind).
I suppose as well there's a third option which is that whatever is connected to the CB is so unimportant that it matters not if it trips.
This is how I understand it, anyway...