I'm not sure that this is a logical and fair reaction on my part, but it's true nevertheless. Common wisdom seems to be that AI voices will eventually (soon? later today?) become indistinguishable from human voices. I guess we'll see.
One exception could be if, being an AI voice is deliberately integral to the content, or beneficial for aesthetic reasons. For example, a video about, say, future technology that is intentionally using an AI voice for "futuristic" impact.