If the main reason of not having a parser is due to people calling out over dps, then you're argument is pretty invalid. If you mess up a mechanic during an important boss fight time and time again, should you not be called out for it? Your continuous failure is causing the group to wipe over and over. Regardless if you're new or not. If your dps is much lower than it should be during a dps check, then yes, you're holding your team back and should be held accountable for.