He's still right, since Metzen only talked about Spirits attaining a physical form and becoming Elementals, while the Spirit is still their core.
What Lokann is talking about are the Elements -- and it makes more and more sense if you consider how chaotic Elementals are (Shaman are "binding" them throught their wrist buckles) and where they're coming from. Elementals and their Lords werent imprisioned for no reason.
Shaman also dont have talents or abilities which lean on the Elemental Lords (the highest ranking Elementals, if your theory would be true). Instead we've simple ones, leaned on Elements - unlike Death Knights level 100 talents, for example.
Short: Shaman talk to the Elements.