Not for nothing, but I've had plenty of service employees talk to me like I'm an idiot. Bad customer service and crummy social skills are pretty gender neutral, Laureli, and confusing that with sexism is a bit of a stretch unless you view all forms of resistance through that particular lens. 
It's funny that you post this article today, because I just got home from Lowes where I spent 20 minutes arguing with an "expert" over the required thickness of residential wiring. Very much a man, in my carharts and manly voice, yet this individual still felt at ease talking to me like a petulant five year old. So there you go.