they wont replace voice actors for that. Rather it will replace voice actors for niche languages for niche content. Just like AI generated images doesnt replace artists working on the latest pixar movie but rather lets some small blog ad an image they would never had otherwise.
But there's a lot of people who have been working as voice actors for small/medium visibility content. Toothpaste ads, Kickstarter promo videos, corporate training videos, mid-range video games... a chunk of that is going away, and it's going to hurt a bunch of people who were previously able to make a decent living off it without being a star.
