This is actually a very interesting question. I'm just curious how this will all develop further and where the red lines will be drawn. Because, use of AI isn't limited to creating temporary art or assets. Will they check the game code? Did the developers use AI when creating the game code (Engine)?Sound? And so on. The scope of AI use has long since expanded beyond creating assets.
P.S - My personal opinion is that AI has become so deeply integrated into game development that it will soon be impossible to draw these lines. Otherwise, developers will simply have to request the game's source code and check it in its entirety, which, of course, no one will do.