So who's aware that AI has progressed in the past few months and weeks to the point where there are now convincing voice changers that sound indistinguishable from real people? The models are relatively obscure right now, but in a few more months several projects will make them easily accessible, kind of like what's happening with image generation.
[spoiler]If you want to find out if an anime girl is using "her" real voice, ask it to sing. The best models are unable to properly translate singing, but I suspect even that will be smoothed over in time.[/spoiler]