Being able to fake something really doesn't matter all that much, as you'd still need to get that fake video into the surveillance camera system and you need to do so in the time between committing the crime and the police arriving, and without leaving a trace and hoping that whoever you try to incriminate doesn't have an alibi.

Fakes will be relevant for Twitter, TikTok and Co., where random videos are posted and distributed without sources, heavily edited and compressed, such that it is impossible to tell if that video ever started out as a real video or a fake. But in court the whole thing starts to fall apart the moment they ask where that video came from.