Yeah no doubt that AI can be used within Hollywood in some form, it is already. ILM Stagecraft for example is using AI generated sets for movies and shows for years now. And yes AI is not going anywhere, I agree. But replacing actors completely, in this context voice actors, I don't see that happening in this decade at least and maybe not even in the next.
But yes I agree that AI can help with improving efficiencies and reducing cost. But then the question is at what cost. Is the cost of replacing an actor for example worth it in the end. I guess we'll see if it ever happens.
Keeping this in the context of voice acting and acting in general. You can get a simple voice program today to read out a script and sound passable. But acting is more than that, there is the creative aspect, the improv. That AI cannot do, at least not today. And I'm not sure it'll happen this decade either. Will it require Skynet level of intelligence, not sure. But the ability of AI creativity beyond pattern recognition is something is that isn't likely to happen anytime soon. And that is why AI should and will continue to be limited to assisting rather than to supplant.