Seriously? The actions of one crew somehow represent the competence of tens of thousands of pilots?

Sure, 3407 was an astonishing display of lethal incompetence. But there have been plenty of gross failures of airmanship at the mainline level. Plenty. I noticed that 3 of the mainline accidents involved SWA aircraft landing. Would you conclue that all SWA pilots therefore aren't qualified to land their aircraft?