a simple request

[Zarabeth]

I run a linkshell and an FC to help new players out with getting content done and learning how to play the game and their jobs. If someone is obviously ignorant of how their job works I will offer advice. I don't do this to be mean or to pick on them. I do this to help them. If they are obviously not welcoming the advice, I tend to just drop it and get on with the dungeon or whatever.

You, OP, don't seem to want any advice or constructive criticism. Stop taking this so personally. Maybe the person who was trying to help you plays that job and knows how to get the most out of it and just wants to pass that on. If this bothers you so much then at the start of a dungeon simply tell the group that you are learning but don't want advice.

One thing to keep in mind. If "everyone" is trying to offer advice, perhaps you are doing it wrong.