Those adornments are the outcome of mind entanglements around a teaching and represent an unnecessary sophisticated elaboration of Dhamma; they are a reflection of that and if we are not aware, the original purpose can be corrupted. This adornments, like the statues and temples you talk about, are cultural elaborations that are full of symbols that are neither good nor bad but veil the direct understanding; they represent mental fabrications and in an unaware mind, they work as noise to the direct contemplation and clear insight.