That's like saying, "It would only take a single example of a table saw cutting someone's thumb off for me to switch back to hand saws."

A noble sentiment, perhaps. But while the table saw user might lose a digit every now and then, you'll get flattened. Determinism is vastly overrated.

And if you can come up with a deterministic tool that can do everything LLMs can then that would be amazing! Until then, we have to accept the non-determinism.