I thought about it when I was working on a few projects of mine, and I think I am being too lenient towards you. First of all, WC Saga is a game, if all the dialogue was taken from real life operation and doctrine, it wouldn't be interesting. After all, do you really want to hear "Whiskey Tango Foxtrot" over and over again?!?!?" Keep in mind it would be said in a way that it'll be totally undecipherable to people who aren't familiar with that jargon: "Inbound Angels 30, Hotel Charlie, Fox-Two". How can a regular person understand that? The WC Saga project is supposed to appeal to science-fiction fans, not military hard cores.
The most important thing is however: To fly a top-of-the-line jet fighter of today (and of course, of a fictional WC fighter of tomorrow) requires an individual with a well-balanced combination of intellect, maturity, discipline, talent, confidence, and ego. You have to be mature and quiet at times, but also, you have to have an ego (after all, it's you VS them, and you can’t lose). Read all of those WC novels, there are some chatter during it (of course, most of these FS guys didn't read the books; you appear to be one of those). In addition, fighters can communicate by secure laser link, so it doesn't mean that everything they say will be picked up on the command net.
And last, in response to your "less chatter makes you disciplined" I can say that there are 4-5 members of the Saga Team who are military (both US and European), but they don't ever strut their credentials in public ever, for they don't want to attract attention to themselves, and by doing that they are professionals: they keep their off-time different from their other work