It's good to have a system encourage players to help each other. And if you're talking about duty finder, don't expect too much.
I just met a ice mage yesterday doing 400 dps when I was tanking daily ex, other monk could do over 1k dps. I only said hello and thanks, and I got 3 coms at the end.
There're peoples only want to play the game, and others want to PLAY the game, why bother. You probably will only meet the random guy once in a life, particularly bad ones.