Processing is what you need to embed a mathematical process into your universe, I agree, but that doesn’t necessarily imply that there is a Universal Processor in which our universe is embedded, or even that this hypothesis is meaningful. (For one, what universe does this processor live in? Processors bridge universes, in a sense—they don’t explain existence, but pass it off to the “larger” world.)
Processing is what you need to embed a mathematical process into your universe, I agree, but that doesn’t necessarily imply that there is a Universal Processor in which our universe is embedded, or even that this hypothesis is meaningful. (For one, what universe does this processor live in? Processors bridge universes, in a sense—they don’t explain existence, but pass it off to the “larger” world.)