I am generally patient with players of a lower skill level who actually try, but its the ones who literally have no idea how their abilities or class works. Like the DRG who doesn't keep up Heavy Thrust/Disembowel/Phlebotomize or combo their Ring of Thorns. The MNK who doesn't hit positional's. The NIN who doesn't use a wink of jutsu or use dancing edge and so forth.

There is a wide difference between trying and not reading your tool-tips, I don't mind if you don't hit everything perfectly, I don't expect that out of everyone, especially in he duty finder, I do expect you to have a basic understanding of your class and skills, especially when in the EX roulette.

As long as you don't use a parser to abuse anyone, parse away, its a helpful tool that is crucial in a raid setting and for statics, its also a good tool to test yourself against other players, as long as you keep that info to yourself, go for it.