I agree. Dismissing arguments based on labels, either self-appointed or given, is a cop-out. Discuss the points raised. Dismissing ‘out of hand’ is not ok. It is perfectly ok to point out what may be a bias based on affiliation, but NOT gender or race. Take nothing for granted. Don’t assume or you make make an ass of yourself. Don’t project. Having a feel for where the argument comes from will only aid you in understanding and drawing out facts and help you counter any points. Labels are for boxes. Not people.