I'm sure you didn't tell your friend they have to be 315+ before they do hard mode again when they wiped either. Being called an elitist doesn't mean anything other than hurting your feelings if your skin is that thin. Light level helps but if the person, as you say, knows the strategy, knows how to stay alive, then the problem isn't the light level. So for OP to resort to recommending 315+ light level for HM, that's just absurd. Maybe OP feels safer running 320s.