It's really unfortunate, but you're going to run into that no matter what MMO you play. I got it a little bit too, when I was new. One time I was in Brayflox with a tank who was clearly new and frustrated, and the healer was being super rude to him. When I told her to stop being that way, she started on me saying how we all should stop playing the game and calling us names.

A while back, I was in a dungeon and I think I slipped up and got hit by ONE AOE, and the tank told me I was the worst DPS ever and that I should delete my character. You're gonna find rude people no matter what MMO you're playing. It's unfortunate, but there are just crappy people in this world. It's definitely a shame.. I'm just thankful this community is overall nicer to newer players than anyone on World of Warcraft. Anytime someone new was near any veteran, they'd just be downright pretentious and rude. The community on FFXIV is way nicer than the one on WOW, at least.