Doesn’t make sense- “All the Egyptian Gods are One”
We see this crop up all the time. I think a lot of it comes from the works of (discredited) 19th-century writers like Budge. At the time, they were trying to make ancient Egypt more palatable to Christians of their day (those wealthy Christians being a source of funding for them.) Some of them also asserted that there was a “secret” monotheism known only to the inner circle of priests.
Erik Hornung smashed those theories back in 1971, with “Conceptions of God in Ancient Egypt, The One and the Many" "The attempt to see in Egyptian conceptions of god precursors of monotheistic belief has the character of apologia and leads us away from this reality.”
If the Netjeru were all one, it would make no sense for them to be in conflict with each other sometimes. It would also make no sense for one not to know what another one is doing, or for them to ‘trick’ each other or hide from each other. Think of Aset/Isis tricking Ra out of his name, Nebt-Het hiding from Set, Aset/Isis hiding Horus from Set- the list goes on and on.
The Netjeru can combine, team up, syncreticize, and act as each other in many ways. However, if they were already “all one” it would make no sense to have forms like Amun-Re, Wepwawet-Re, Mut-Wadjet-Bast, Mut-Sekhmet-Bast, Mut-Sekhmet-Bast-Menhit, and Mut-Nekhbet.
Ancient Egyptian/Kemetic religion has a lot going for it, and attempting to make it more like Christianity only detracts and dilutes it, IMO.