OK, whose ready for the big shock?
Concerning this issue I totally 100% agree with keepinentertained, oomis, Sjs, yossia & co.
Saying “Good Shabbos” is not “talking to a girl”, it’s basic mentchlichkeit.
This is one of the few things which really bugged me when I moved to Eretz Yisroel. No one here says Good Shabbos, but back in Brooklyn (at least when I was growing up) EVERYONE did. Old men, young men, old women, young women, children – whoever you’d see would be greeted with a “Good Shabbos”.
That is NOT pritzus.