In my original comment I was asking people to follow me into an imaginary future where there are less artists. Artists reveal something about the world that speaks to us, which they do through critically breaking down and reforming what they see. I can't remember who said it, but they said when art speaks to you, it's a momentary bridge between the artist's soul and yours.

I'll answer your question, but my question for you is: why were you buying wall decorations in the first place? To me, it sounds like you were searching for a product category, and not specifically for art.

Regarding your example, if the AI is capable of imitating David Attenborough by including his name in the prompt, then it was probably trained on his data. If he didn't consent, then I might argue that is ethically wrong and, in my view, theft. If the channel was not monetized and done without his consent, I might argue that is just an ethical failing. In using his voice, the channel betrays the fact that it has value, otherwise they would continue to use the random old man voice.