Anki and GPT-3
As a daily Anki user, I am highly skeptical of this idea.
The careful creation of new cards is one of the key parts in learning the material.
It promotes a critical thinking step where you have to distill the material down into small but important pieces and (if you want to do it well) forces you to evaluate if you have actually understood what you wrote down.I suspect that forgoing this step will not lead to understanding, but to rote memorization of trivia. Which is fine if that's your goal, but it leaves most of the potential of spaced repetition on the table.