Healers that don't want to DPS are like DPSes who refuse to move out of AoEs.

[aleph_null]

He doesn't say people "should" be DPSing ever is the main point.

The way I see it is that if it benefits your group, why shouldn't you do it? It's like saying smn should use virus, blm should use apoc, mnk should use mantra, those are all not a part of their "job" (the way some people here insist dps isn't a healer's "job") since they're dps, but those separate the better players from the rest. I'd go as far as say that healers should also know when to use their dps utilities like balance/arrow and fey wind, and time them according to when the dps players do their burst rotations with cds up, but that's playing at a much higher level than simply healing and dpsing.

I don't like to draw hard lines on what is or isn't my "job", I just look at them based on how they benefit my group and whether they're feasible given the situation (no one should prioritize dps over keeping people alive).