A dps responsibility is to do good dps. A dps that doesn't is not fulfilling their role. In difficult content, one bad dps is all it takes to hold the entire party back. If someone isn't pulling their weight then they should be called out on it. Healers get blamed when they screw up and let the tank die. Tanks get blamed when they lose hate and let somebody else die. So are dps free of responsibility? The answer is no. Dead weight is dead weight. Dps or not. If you're a hindrance to the group and don't make an effort to improve yourself then it is your fault and nobody else's. I also find it silly because parsers are a way a dps can see their performance and improve. Imagine a tank not being able to see enmity meters and just had to guess how much hate they had over others. That's kinda how it is. A parser is an essential tool for a dps.