I agree, Adyashanti is more for those who are already quite advanced on the path, or already serious about it. He looks down on the way most spiritual teachers teach and can come across quite precious or pretentious.
He says things like awakening has nothing to do with attaining bliss, peace, and love and those are just a by-product of awakening. Maybe so, but that would be the main motivation or a big deal for most. He also likes to talk a lot about how painful the path can be, and isn't really good for attracting new-comers.
At the same time, he has been trained in Zen from a very early age and started teaching on the request of his guru, and he does know the real stuff. Also, I think he comes across better in interviews or speeches as he has a very beautiful, soft being and personifies enlightenment, which doesn't really come through in his writings.