I don't think everyone is saying to stop DPSing. They need to stop trying so hard, melding Direct Hit. Every single time I see a healer that can't keep people up in base content, I examine and find direct hit.

I just saw a white mage in Smileton ask the SMN to run their Regen because the tank is taking a lot of hits.

It might help in raids, but have the good sense to keep a set of gear for running dungeons, where there are a lot more hits going to the tank.