People are to be blamed for this.
Not everyone. Some of them.
Which one? Those who don't take the time to read the description of their skill at least, especially when they leveled up very fast.
Those who are trying and learning, it's okay, you need to practice anyway to feel confortable with your class and dungeons are the best way to do it.
The worst player are those who play terribly bad, probably never read the description of their skill, and when you nicely try to tell them what they should do, they insult you or refuse to consider what you're telling them.
But, in dungeons, you have to expect to meet every kind of player if you go in with the duty finder.
But, indeed, there are some basics you shouldn't explain to someone at lvl60. When I say basics, it's skill from lvl 1 to 30.
