Is not dps'ing that rare?

[winsock]

#1 is what does DPS mean in the context of healing

Don't just stand around idle.
Most people won't take issue with low DPS provided you are using CS when DPSing. You do have a DPS rotation and should push for high DPS, but keeping party members above 0 HP is a higher priority

#2 Is it really that rare, or is this more of a "soapbox"moment for everyone who has that one story where all the healer did was heal, even when the tank was overgeared and both dps'ers didn't draw aggro, and stayed out of the "bad" ?

Happens all the time.