I never stated that a bad tank shouldn't be kicked, hold back on that blamethrower there kid. A bad tank should be kicked too, but not always due to a bad dps who keeps ninja pulling. A ninja pulling DPS doesn't always mean a bad tank - can be the reason for a bad tank, though.
What does go for DPS, for it is the same thing by chapter but different duties. Hardly any requirements for DPS now. If you take away surviving as you say, doesn't matter, then all you do is basically, hitting a target - nothing more. You aren't saving the raid from damage, you aren't in need of interrupting, or healing. You are more or less cannon fodder that just have to learn to use your abilities correct - and in many cases, it is a minimal effort too.