It soundded patently like a pandering to young people for whom casual is right and good, like Jim's hair on "The Office," and untucked button-down shirts.
We're all casuals now, so Nero sounds hip. But it sounded like some of the out-of-place cute lines in the TNG movies, esp. from Data: "Lock and load." Or, "Yes!!" when the ENT blows something up (can't remember what). The obviously "cool" line of the movie, if ya know what I mean.
Like it if you like it, I'm just offering my opinion, since I think that's what the OP asked.