You know,
Iamnotspock, it's funny you should mention
First Contact and DS9's influence on how Worf comes accross....
I recall, J.M. Dillard's novelization of the film more directly emphasizes exactly that. A nice moment--in the book, when Riker asks, "You
do remember how to fire phasers...?" to which, instead of frowning in bewilderment at Will (as he does in the film), Worf deadpans, "The green button...right?"
Riker muses that Worf's time on DS9 was clearly good for his friend.