People getting emotional in here for no reason. Titania can be killed with a group of nothing but grey (<25 percentile) + green(25-49 percentile) parsers. Titania + Adds have approximately 34 million health combined. Over 11 minutes, an average of 51,515 group DPS is required to beat it, which is a little less than 6500 DPS per person.

The reasoning against parsers because of toxicity is flawed. Just looking at how people are playing is enough to have an estimate on player performance. For example, it's easy to tell if a tank uses cooldowns, if dps are AoEing or just plainly not even pressing buttons. An asshole is going to be toxic regardless of if they have hard evidence to back it up or not.

Different groups have different goals, and other than being civil, you don't have an obligation to the group and the group doesn't have an obligation to you. If someone is harassing you, report them and leave the group.