I don't know who you run with, Snowfox, but the idiots that we sometimes find in the LFG queue won't ever learn and are more likely to ninja-pull and drop group than take the criticism because (and I swear this happened, I just wish I'd screenshotted it) I've heard a DPS say to a Resto Druid "ur DPS suxx u need 2 step up @#*@%."
There are far too many Floor Tasters using the LFG Tool, sadly, and none of them will ever read this.
I run both pugs and this guild I sort of fell into.
Maybe I've just been playing too long or pugged too much... but I've always sort of known groups to do that, even back in classic and throughout all the expansions.
I think players got used to being able to just power through such things in wotlk though, and that's the real issue here. Where once upon a time two ticks would have been death, it became four ticks, and we could save them handily... then all that got reset to where groups needed to cc, needed to have situational awareness... but those skills had atrophied.
So now healers are having to deal with that again, but it isn't the first time we've had to. I've always considered dps suicidal. What was once people stand in green gas in scholo is now void zones in cata.
What should Blizzard really do about that though? Nerf everything to an extreme... or give time for player skill or player gearing to catch up? I tend to think time, but some people seem to want to faceroll heroics in pugs this very minute.