I don't know about this.
I think dying as a Marine is far more rage-quit worthy.
Marine players have far more connection and personal investment into their own characters (they should at least). By the time marines deploy, gear up and talk to people it's an equal drag compared to the aliens start.
In my opinion, an alien player is far more likely to simply restart as a larva/new alien due to non-attachment to their character as opposed to a marine player.
I will however concede that a Xeno player is far less likely to ever play Marine whereas a Marine player will generally switch over to Xeno once they die.