Just like https certificate authorities, the only way to fight all the AI slop will be "trusted" camera firmware that signs every image with a full chain of trust that the output was a real physical video taken will a real device at a real location.
I guess but if the production company is the Office of the President of the United States then.... What? Never trust anything they put out again? That helps me I guess but it doesn't help the other two thirds of the country.