Just saw the notification for this in my Youtube Studio. For now it seems as if this setting is turned off by default, but for anyone like myself who uploads videos to Youtube, I recommend checking that they don’t decide to toggle this on for you in the future.
they can just bury your channel and never promote it if you don’t accept, right?
Don’t worry. This is just third party AIs. Google’s AIs will still be trained on them without your permission.