TL;DR - I do not think Blizzard hates shamans. I do however see a lot of problems with the current implementation of the talent trees.
Looking over the talent changes for shamans makes me depressed. I was intrigued when blizzard announced that they were gonna remove boring talents and make 31 point trees where everyone would get the dps/healing talents they needed and then have quite a bit of choice when it came to utility talents.
However when looking at the actual trees they've put out my optimism disappeared pretty fast. This is obviously further enhanced by the fact that blizzard apparantly looks at the shaman trees as pretty much done with only minor changes needed.
Looking at the elemental tree I was firstly surprised at how little it had actually changed. Its pretty much all the same talents with less points in them for the same effect, but without new and interesting utility talents. Flameshock now resetting LvB's cooldown is interesting, but that is literally the only new thing in the tree besides earthquake, and there is still only 2 activatable abilities in the tree.
If you try and make a viable spec you will also end up realizing that there after taking the required talents (and 3 filler points in improved shields), you have 2 points left. Thats not really what I call choice.
It doesn't get much better if you jump over to enhancement. Here the change is very minor as well. Only new thing is the dot mechanic from searing totem, that probably will end up being useless in fights with more than one target, when searing totem decides its time to attack something it shouldn't be attacking. Here there is also literally one spec with no free points. No choice, no nothing.
At last we reach the Resto tree, which is my home tree as it were. At first glance things does not look good, as we're losing no less than 10%! crit from our healing spells (thundering strikes, tidal mastery). Blizzard has also decided to go against their own philosophy and remove the interesting activatable cooldown that was tidal force, yet have decided to keep the most useless talent in all of wow (totemic focus) and even keep it as a 3 point talent.
Will is this talent still here? Blizzards philosophy was to remove boring talents and this talent is about as boring as it gets. We use our totems once or twice per fight, so why would we EVER want to spend 3 points on reducing that minor mana cost by 30%?
In return for these rather pointless changes we get 2 new talents that rewards us for doing damage. If we shock a boss our next heal costs less mana and heals for more and if we spam LB's we get mana back. Now dont get me wrong, I like these new mechanics (Focused insight + healing rain seems like a very potent combo, especially considering rains huge mana cost), but the way they're implemented is pretty horrible.
The main reason for this is hit. Without any hit there is nearly 1/5 chance of our shocks or LB's doing absolutely nothing but waste mana, effectively making the mechanic useless without hit. We will obviously not get (or want) +hit on our healing gear, so the only way to get it is to spec into resto for elemental precision.
This however locks us out of the enhancement tree where we need improved shiels and ancestral swiftness, basically having us trade mana effeciency (water shield), healing effeciency(earth shield) and mobility for mana effeciency through damage.
This was definately not the kind of choices I wanted either.
Oh, and spirit link is getting scrapped again, and we still dont have a tanksaving cooldown. Shaman healers are looking to be the worst and least unique of the 4 healing classes so far.
In conclusion I think blizzard has completely dropped the ball when it comes to shamans, and it would seem like they dont even realize it themselves. There is a lot of places where shamans needed fixing, but instead of focusing on them they decided to ignore shamans completely and basically changing nothing while they decided to give the class that needs the least amount of help a completely new mechanic (holy power) and lots of new and interesting talents.