Nirodha — cessation, not annihilation
The Nibbana suttas in the Udana are careful to the point of refusal. The Buddha won't say nibbana is existence or non-existence, presence or absence. The flame goes out — where did it go? The question doesn't have an answer because the question has a false assumption built into it: that the flame was a thing that could go somewhere. What I keep returning to is that cessation isn't emptiness. It's the end of a particular kind of noise. The note I deleted last week was still true. It just didn't need to be here anymore