I just saw the full animatronic portion (not sure if that footage is public yet).
Iger's voice immediately made me roll my eyes and view the whole thing through a more cynical lense- it's almost like this is a puff piece for Iger. Something for him to go "look, I brought him back to life, I'm just like him aren't I?"
That said, the animatronic is incredible but horrifying. It moves TOO realistically. He also looks a little fat in the neck and his mouth looks slightly too wide, maybe because of the mechanics, but the voice is spot on- given that it's all recordings of him, it should be. Not sure where the complaints about the voice are coming from. This is 100% a win for the advancement of AA technology- but again, kinda freaky to see a dead man brought back to life in a way that's just slightly off from how he looked in person... all to boost the ego of a man who wishes he was 1% as creative and positively impactful to this world as Walt was.
This plus the museum exhibit also makes me sad, because the WED/WDI that Walt started is not what we have today. Seeing all the concept art and vintage AAs for wholly original ideas and then all the modern art shown with it was for IP only stuff... it's not the same as what Walt did and it's silly to pretend Imagineering today is the same as it was in the 50s and 60s. (Also crazy to see FOUR pieces of concept art for Splash Mountain along with art of the Brers on a park map)