More to the point, though, bswpayton, even by the point of Ifrit, players should have learned that some enemies have a swipe/cleave ability that hits fairly hard, and dps should not be standing on tanks. By Titan, you should have learned for sure that you probably shouldn't be standing in bad things. Granted, there are some times when you do want to stand in things - so stand in your first Weight of the Mountain, get hit, watch your health drop. Hopefully, you learned to not stand in it.
The first time I did Ifrit, I was levelling as BRD (well, ARC). I do have previous MMO experience, so I already knew about not standing in front of Ifrit. But my first Titan? I was so clueless, even with a video. The one I watched emphasized that all party members need to stand together - well, he jumped, and I was on the "wrong side" of the circle, so I figured I could run right through.
I apologized for my foolish death. Forgiven, Raised, and not five minutes later, fell off due to Landslide. Granted, I had terrible lag, but I explained I was also new, and they explained the fight to my distant, cold, dead corpse.
Back to the topic, it's not necessarily the fault of the new people or the veterans. It's a combination. Personally, I love newbie bonuses in duties. It just makes me all excitable. If they ask for help, I'll do what I can to help. The problem of veterans comes when the veterans forget that they, too, was once a new person who didn't know what to do, and treat the new players with pure contempt. And the problem of the new players comes when they forget that they, too, can always have room for improvement, and not everyone is out to get them. Get enough contemptuous veterans exposing their disgust to the new players, and absolutely the new players learn that the best defense is a good offense.
And yes, you'll also have the players (both old and new) who don't want to improve, or who prefer "I get to play with my friends, even if we waste time doing the same thing over and over!" instead of accomplishing the group's goal. That's on them. It's also on those of us who tolerate that behaviour.