As crazy as video generation is, remember that digital forensics exist. As far as I can think of, we may have been seeing a couple of AI images with the Palestinian conflict stuff but tools were able to tell it was fabricated relatively well. Other than that, I don't think there have been any instances of people using AI to try and pass off fake stuff as real. Honestly, why would they need to do that in the first place? There are usually easier ways that someone, especially people in power, can convince anyone of anything and they have been doing it for a very long time. In this regard, I think the status quo will likely remain unchanged.

As we saw and continue to see with image, voice, and text generation, the implications of video generation are mainly for things like memes and farming clicks for ad revenue. Which does include really shitty children's entertainment. Good for a passing glance for people who want a laugh or just have no taste, but it will never actually stand up to real artistry, at least in my opinion. With how much of a negative light is cast on AI generated content being used professionally as well, I don't think we will see it used by anyone who is serious about wanting to create something because their reputation will be tanked otherwise. Just take a look at games that use AI artwork. Hell, even games that are suspected of using AI in their creation get shit talked even if they haven't used it, like Silent Hill: Ascension. Calling something AI generated is becoming an insult these days, I've even heard kids tell people they have an AI generated personality