I honestly don't know. It could be the server. It could be what I guessed. It could just be the person. :) Either way, I imagine they get paid by some people - enough to keep them doing it, anyway.
I honestly don't know about the males vs. females in reactions. Despite being on an RP server, I tend not to socialize much beyond my guild, and they're all pretty friendly and straightforward.
One thing Blizzard did do that drives me batty (especially in Outlands) is make tons and tons of useless and unnecessary NPCs. My computer isn't a slouch, but it isn't the best in the world, either, and having to deal with that much activity that is more or less background noise slows it to a halt. Keeps me from enjoying outlands much at all.