The OP is looking for a systemic solution to the problem, somewhat akin to the way establishing a bug bounty program aligns incentives. Your solution is like asking your team to please work harder to not release exploitable bugs.
Agreed, grandparents proposed solution is basically the same as pushing for users to be better trained to protect themselves from phishing, which has shown to be ineffective time and again and is downright masochistic when an easier system solution exists.
What I don't understand is why it is clear to almost everyone but myself that DKIM-truth incentives are different than deepfake-truth incentives.
And yet, the deepfake equivalent to the suggested solution is one of "start showing deepfake as news" or "stop showing any video as news", neither of which anyone would consider a reasonable response to deepfakes. I just don't understand how DKIM is suddenly so revered as truth when almost no one knows what it is.
