Attention is a budget. Spread across five mid-sized pieces it buys you 'has piercings'; concentrated in one commanding piece it buys you 'that person with the industrial bar'. Statement styling is the deliberate choice to spend the whole budget in one place — which means the piercings around the hero exist to frame it, not compete with it.
The test for a true statement piece is distance: it should be legible from across a room. An oversized conch hoop, a thick septum ring, a bar spanning the ear — these have silhouette. A large gem on a lobe is expensive, but it is not a statement; it disappears at ten paces.
This economy of attention is also why statement style is the most workplace-negotiable bold aesthetic. One removable or flippable hero piece converts to invisible faster than a six-piercing composition ever can.