There's a bit of controversy surrounding this topic in regards to the new Anthony Bourdain documentary. Not being a random voice, but, the voice of an actual person.
https://www.latimes.com/entertainment-arts/story/2021-07-26/la-et-anthony-bourdain-deepfake-ai-voice-documentary-audio-cgi
I think these AI voice techniques will become common place much sooner than later. Similar to how AutoTune has tarnished the perceived artistry of a well executed vocal performance, this will degrade the sense of comfort and companionship a great voiceover performance provides.