There are more questions that make sense than those that can be tested.

To the point, I have a convincing experience of consciousness and free will — qualia — and I suspect a digital clone of my brain would have a similar experience. Although this question is not testable, I think it's inaccurate to say that it doesn't make sense.

It’s not really the testableness that makes the problem. It’s the fact that you’re asking about X where X is undefined.

If you can provide a satisfying definition of X it’s very clear