Aerocat, I disagree with the view of knowing or not knowing the state of awareness. A significant aspect in many accidents is surprise; a situation which was not anticipated, or an outcome which does not match actions or intent. IMHO any EGPWS alert would more likely fall into this category; if you are surprised, then act.
There may be ‘obvious’ situations where a small correction will apply, providing the alert (the situation) was expected. Being able to anticipate an event is part of awareness; thus a callout – “we may get an alert because” imparts knowledge because the situation is sufficiently understood and to a degree is being managed; situation awareness – being able to project ahead.
Calls after the event have little meaning other than to cover embarrassment.
If anticipation is absent, then so might general situation awareness; what then is the value of judgement.
(GS alerts are also inhibited below xx ft according to system/instalation)