I don't agree with much you say. Specially not how you say it.
Because most plays them terrible. Most picks the tree, and it's completely garbage. You show that now you've been pressured and are ready to die when the tree is down.
From my experience as to how many that actually manage to play their class well enough to survive close to as well as they could, if they were good, against people that knows how to the healers works, druid isn't the easiest at all.
Hardest to easiest.
Mistweaver. Most is beyond terrible at this class and only rely on people stunning them once in a while. being surprised each time they fade.
Druid. Despite the huge amount of escapes and great output they can give, running hots while they're CCd, a lot still fails majorly at this.
Paladin. If they actually use their hands well, on top of the bubbles they can be painfull to kill, but a lot haven't learned more than 2 bubbles and hand of freedom.
Shammy. Those strong totems. Most are managing to survive just fine just by popping things desperately, but you really need to learn fake casting with this. Overall most plays this in a working way. Is a lot more that can be done of course.
Priest(disc mostly). Have strong CC, very simple healing. Specially in 2s you can completely lock another player down