Annie is a terrible support. She has no utility outside of her stun, once that has been exhausted she's a sitting duck that can't peel for her ADC, especially since she hasn't bought any combat items since she hasn't been farming so she doesn't do any damage on her own either.
Annie support is like Vel'Koz support, it's a glorified kill lane.
The true supports like
, and hell, even the uncommon supports like
, all bring far more to the table then annie ever could when it comes to buffing, peeling, and overall protecting their ADC.
I don't know why these LCS teams keep taking annie support, I have yet to see a team with annie support actually win against a team with a REAL support (
is very popular at the moment). In fact, it's usually the annie support that is throwing the game, since she does no damage and has no defense items, so when she misses her stun then she just sits there, unable to draw attention and little more than an easy kill for the enemies. Meanwhile, the enemy Morgana has rooted the assassin, black-shielded her ADC, and is currently working on shackling half the team.
Do you know what the definition of insanity is?