I think the problem we have with deepfake believability today it just takes one ...

I think the problem we have with deepfake believability today it just takes one weak link to spoil it. It turns out that we're somehow still pretty bad at believable audio and not even close with deepfaked 'presence' in the form of persona of motion. But if you pair a believable impersonation with something even remotely state of the art in the visual, you end up with something pretty compelling:

https://www.youtube.com/watch?v=bPhUhypV27w (Not the greatest visually but funny nonetheless, esp the end)