You can't say that something can never be ethical/safe on the one hand, and then on the other hand say that being ethical/safe depends on context/intent. Those two statements contradict each other.
Either AI can be safe and ethical in the right context with the appropriate intent which contradicts the title, or it can't be safe/ethical regardless of intent/context, in which case the title is correct but the reasoning is incorrect.
There is no consistent way to interpret the remainder of the article with such a glaring and obvious inconsistency.