In PieFed v1.4 it will be possible to label posts as having AI generated content. Labelled posts will get a little badge near their title, similar to how nsfw and nsfl content is labelled. Mods and authors can change this value on a post in the same way they do flair and nsfw, using the little tags button in the bottom right or in 'More options' when editing their post.
Account settings for blocking:
Similar to how NSFW works, each user can control how those posts are listed on the home page, etc. The default is 'Label as AI', which just adds the badge. People averse to AI-generated content might want to change this to 'Hide completely'.
Also similar to NSFW, entire communities can be assigned as 'AI content' and that will auto-tag every post inside as being AI generated. If the community mods have this value unset (e.g. Lemmy communities, which don't have this functionality) then the instance admin can manually override the community's AI Generated setting.
Good idea but it won't help with accidental AI posting - when OP genuinely didn't know that the image was AI generated. The label can be set AFTER posting which is good.
The unfortunate thing that needs to be recognized is that we're already beyond the point where someone skilled can create AI generated content that looks hand made or like a real photograph. The thing we need to be focusing on is context and corroboration. Even if some content looks completely real and genuine, if it isn't corroborated and no one knows where it came from, then it becomes safer to assume that it was generated with AI, manipulated, or photoshopped.
I disagree. Laughing at an AI-gened meme might be unpleasant (upon later realization) but it's still better than wrongly accusing a person of using genAI. Especially if they work really hard on their craft and thus treat it like an important part of themselves. Artists already experience a lot of accusation under even their most human art.