Artist Jingna Zhang built Cara, a platform explicitly intended to protect artists from having their art stolen by AI...and yet these people just won't leave them well enough alone.
The issue is that they can just reuse the existing art once they've "removed" the poison that was used on it. The artworks with poison in them aren't forever inaccessible to them, they just get them slightly later.
That doesn't mean we should stop, but it still is a war that we ultimately can't win. Even if the poison technology advances faster than the AI companies are, they can simply use slightly older art with a less sophisticated version of poison.