They are certainly not "afraid", which is a ridiculous assumption, they just don't like to play a Queen down. That's understandable, I also resign when I lose my Queen in the opening.
I'm very sure that this site has no algorithms to filter out certain playing styles, though that would be kinda fun.
Out of curiosity: how do you score when you play on after losing a Queen in an equal position?
Is there some sort of algorithm that tracks players that just quit after losing their queen or rook within a couple of moves? And Is there a way to filter out playing them? This isn't a graceful resignation...it's just quitting.
I play so many games where players are afraid to play without their queen and just quit...it's very annoying. Why are so many players so dependent on their queen?