It means that for a man who wants "practical, non-judgemental girls," the decision to call it quits is much easier in regards to a girl possessing an ego that is stereotypically judgemental of his identity in such a demonstrable fashion of her "trying to figure out how she was better than [him]....IN EVERY FACET OF LIFE".
I do not have such need to believe, as I take what the other person says at face value. Specifically NTDF9 gave a report of his date (a real-life event), and it is hardly a random internet opinion; he was the one who was there in flesh and blood body and only he could have assessed it better than anyone here (with their random internet opinions/ judgements). Not imposing my own opinions and biases on the other person -- and generally taking what they say at face value -- makes life much easier when it comes to interacting with people.
Also, as random internet opinions don't spring out of nowhere -- they are reflective of the people who write them -- I wouldn't downplay it using the attribute "just." I started this whole thread after being bewildered by someone (vinceguidry) defending a girl who was just reported to be stereotypically judgemental of her date. He wasn't just expressing a random internet opinion, especially as I am familiar of this attitude among (some) men in the real-world.
What people talk on the internet is reflective of what happens in the real-world.
I'm sorry, but I'm way more inclined to think that it was him that was lacking in social adroitness than that she was so unbelievably insulting that he couldn't even talk to her.
I don't want to analyze it too much, in the end it's just a bad date. But I get asked stuff like that all the time, and it doesn't piss me off. Some coders really aren't very adventurous. If I was one of those coders, I wouldn't get mad either. I'd just realize she's not my type, enjoy the conversation as much as I could and move on.
Why be so quick to take offense?