would you apply the same logic to the Great Pyramid of Giza or the Taj Mahal or any of the other treasures of the world’s heritage?
see https://www.livescience.com/how-egyptian-pyramids-originally...
I'd be more impressed if Egypt restored the Great Pyramid to something close to how it looked when first built.
That said, the Great Pyramid is a historical site, not an active worship site, and modern archeological sensibilities prioritise conservation. A restoration like that might make it hard to answer future questions about the pyramid.