There are two jobs in FFXIV which everyone is responsible for.
1. Assure targets are taking as much damage as possible.
2. Look good doing it.
Most players fail at least one of these, but a rather larger number fail at both.
Just do the two things you need to do.
So for the issue of damage I'm not sure. Learn your job! There are even in game tutorials to a certain degree! It is inexcusable in my opinion. Though it's okay if someone is learning or focusing on mechanics but other than that, yeah.
For fashion I can excuse. Square Enix doesn't educate the player about having a sense of style or how glamour's work. Also fashion is expensive! Often good looking glamour is very expensive. You can get away with budget glamour but it isn't the same.
Also what looks good is in the eye of the beholder. You may think someone's get up is whack, but another may think they got the drip. After all we wear what we like cause we like it. We don't wear it for others.
Ruining you name is MINT. That is all..it had to be said.
ON topic..I excel at looking good.
Mobs know I look good, acknowledge it by dying faster. All works out.