What is a "bad player" to you?

[JunseiKei]

Just ran into what I'd call bad players:

Queued for Doma Castle as a Paladin and eats food buff. We get to the first boss. Takes 10 minutes to kill the first boss and I was legitimately TP starved.

[12:48 a.m.](Me) So.. you guys know how to play your classes? D: I've never had a dungeon boss take so long to kill.
[12:48 a.m.](Me) Genuinely asking.
[12:49 a.m.](Black Mage) yes i know how
[12:49 a.m.](Samurai) reported
[12:49 a.m.](Samurai) bullying
[12:49 a.m.](Me) I'm not bullying, but I am asking so I can help as another player.
[12:49 a.m.](Samurai) im gonna kill myself

Samurai proceeds to pull the Vanguard and run back to me. I grab the add and just watch what they do. Black Mage proceeds to cast only Fire III and then Blizzard when they are at about 20% MP left. Samurai is not keeping Shifu and Jinpu buffs up; only skill I've seen them put up is Higanbana (no Tenka Goken for adds, no AoE in general for 4+ enemies, and no Midare Setsugekka).

[12:52 a.m.](Me) Okay, well, just watching this last fight, the two DPS could use work. I'm going to dip out under difference of playstyle. You guys enjoy your run. :3

I ate the leaving penalty. I have no problems with teaching players how to fight properly - I did this for a tank I wind up in an expert with years ago. However, even as a mentor, I did not sign up to encourage this kind of mentality the two above showed. I gave them both a chance to ask questions and let them know I knew something was wrong. From other mentor encounters, I've forcibly accepted that if players don't ask for or want help if you offer it, you're often wasting your time.