I'm assuming a maintenance issue due to a familiarity with construction techniques and material properties. There are ways that things fail. This delaminated like something with pre-existing damage to the underlying attachments.
The ECV didn't damage a continuous surface. We're not talking about a stucco wall where the crack spread out across a wide panel. Or where a steel track was pulled along with its attached components. This specific component of the facade was composed of distinct panels furred out around concrete. The panel with the sconce was not undamaged, if you look at the last photo on the page below you can see that the top of the panel is damaged, it is broken at an angle such that the "top" of the panel is higher on the left side than on the right side.
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The damage extended across multiple pieces, which indicates that some behind them failed significantly to break and pull multiple panels offs. That's multiple, separate points of attachment all failing. That sort of spread out failure is what suggests a pre-existing underlying issue.