Very good post. Another factor to consider is that a technology can be powerful when everyone does know a bit about it, but the perceptions of around it can be manipulated.
To stick with your 'Bill Clinton murdered someone in 1990' example, if you are Alex Jones and you say that then I will be skeptical gien Alex Jones' serial unreliability. But if you deepfake yourself to resemble a (hypothetical) real person called Albert Johannsen who died in 1995, and manipulate the video to look like old VHS, then the authentic-seeming testimonial can be 'discovered' by someone clearing out an attic or storage unit, and then merely publicized by you-as-Alex Jones, who merely reports the claim of the discover (actually a collaborator of course).
There is an endless variety of of applications, eg you have really committed a crime and video exists, but you produce a deepfake of yourself committing the same crime multiple different ways or the like, such that everyone thinks You Did It but nobody can agree about exactly how or to what extent and you escape justice due to the ambiguity (albeit with diminished future prospects).
To stick with your 'Bill Clinton murdered someone in 1990' example, if you are Alex Jones and you say that then I will be skeptical gien Alex Jones' serial unreliability. But if you deepfake yourself to resemble a (hypothetical) real person called Albert Johannsen who died in 1995, and manipulate the video to look like old VHS, then the authentic-seeming testimonial can be 'discovered' by someone clearing out an attic or storage unit, and then merely publicized by you-as-Alex Jones, who merely reports the claim of the discover (actually a collaborator of course).
There is an endless variety of of applications, eg you have really committed a crime and video exists, but you produce a deepfake of yourself committing the same crime multiple different ways or the like, such that everyone thinks You Did It but nobody can agree about exactly how or to what extent and you escape justice due to the ambiguity (albeit with diminished future prospects).