Developers browsing for assets will love this feature! Even more, once the information box will show the AI usage meta info.
And since that tagging is mandatory for assets, after that grace period, they will either be tagged yes/no or be deindexed anyway because they did not give the information. So actually the no-ai should evolve to be a strict negative for assets.
But I fear that being "AI free" on code will be a grey area. Positivly claiming you did not use those llm helpers should be ok-ish. People usually know what tools they used. Mostly. I am not so sure about a thing like Photoshop. But even using a translator service on the net might constitute llm AI usage.
To me anything you use a "prompt" to create something is the "AI" we are talking about. That is why I am unsure about AI voices or translations. And even code snippets might be debateable. Or using a llm to debug code, as mentioned below.