The better those videos become, the more people will fall for fake videos. That's a nobrainer. So we need better education/awareness, but that takes time. More than developing AI, at least that's likely.

So far you can almost always see little details which make it obvious that a video is AI generated. Question is: Will this change? Many people are convinced it will, I am not 100% sure. The improvements we saw, e.g. with Sora now, are definitely amazing, but you can see the exact same issues like before: Weird details which make it very obvious that it is AI generated - if you watch carefully.