Why the accent decides everything
Spanish has no neutral. A Mexican audience hears Castilian “th” sounds as foreign; a Spanish audience hears Mexican intonation as television dubbing. Today the library has two European Spanish voices, Dora and Alex, from the Kokoro voice set; Mexican, Colombian and Argentine voices are in production and will appear on the accent pages as they land. Until then, write with the region's vocabulary — audiences forgive an accent far sooner than they forgive the wrong words.