Darth Vader's AI Isn't Going to Last Forever, Right?

When I watched Obi-Wan, there was something about Darth Vader's performance that I didn't like. It did a fine job, but it still felt like it was missing something to me. The way they have done this whole thing going around, I'm kind of fine with. Like in the same way that Mark Hamill on set during the Mandalorian stuff to like be Luke Skywalker. But then they completely digitally replace him with an younger version of him. Well, they do multiple things. They have him do a thing. And we're just going to type some text in and the AI is going to spit out the Darth Vader lines. That doesn't feel good to me."