I think brand new stuff is probably safe, but old keys that currently being used for AI and non-AI stuff - if Google disables them for AI and it turns out it was actually not being exposed publicly, could disrupt a user's production service relying on AI.
They messed up by allowing old keys to be used for both private and public APIs in the first place, but now it's difficult for them to undo that for existing keys.
They messed up by allowing old keys to be used for both private and public APIs in the first place, but now it's difficult for them to undo that for existing keys.