I think the word "attitude" in your first sentence regarding Duncan's post may be slightly misleading with all due respect, but it really shouldn't bother you at all.
I wasn't familiar with the word "rookie" (which was always from a North American standpoint, was it not) all those years ago and can even remember questioning others as to what it actually meant!
We continue to use more and more Americanisms of course and some of them are at least amusing - although "deplane" the other week in New York most certainly wasn't.
Anyhow, this is a ridiculous thread and I sense the end of TNF somehow...
What I’m referring to is the attitude of trying to downplay Jacques’ (or anyone’s) rookie achievements, whatever word you use, by saying how they had been successful elsewhere. It doesn’t matter what they did before, it was still their first time, call it “rookie” or “debut” or whatever.