It is about choice and preference and needs. Desktop units, although better, may not suit everyone's needs or ideas on how they prefer gaming. I could do with a laptop because there is no room to move my desktop setup downstairs. I currently don't
need a laptop myself but my setup takes up half of the spare room. It would be nice to have one though as it means I can spend time gaming downstairs when the wife is home, it means when I work away I can game and it means I can turn the spare bedroom back into a bedroom.
So simply saying PC > all, why bother having a laptop is missing the point.
I was being tongue in cheek with the neckbeards
But yes it is a word and yes it tends to describe the elitist PC master race better than most other words