If they don't matter, neither does a watermark.
What image is going to change your worldview so radically that the drm saves you?
edit - to be clear you are watermarking 100,000 fishes with mustaches because of your concern over 1 image that "matters" (and you don't even have an image that matters in mind)
https://www.nbcnews.com/tech/social-media/openai-sora-realis...
https://apnews.com/article/artificial-intelligence-elections...
It doesn't extend to just photos, but videos too: