” but still major questions are not answered”
Anyone who supports some cockamamie idea with those words can be shot without lowering the intellect of the community.
Actually one of the major questions is which King/Pharaoh came before which and what were there names. One of the historic sources for those names and the order has been proven to be a longstanding fake, yet is still relied on as if it was genuine.
Further, many names are the same or similar and even unknown, some names are used for known people occur only on the list. A list believed genuine is incomplete and complied at a later date tan the fake. The significance of this is this list is used for dating everything from the Sphinx to each and every pyramid and temple.
Other forms of dating are not permitted by law, unless done in Egypt, even if the equipment does not exist there samples may not be taken out of the country. So thermoluminescence dating (dating the stone itself) cannot be done (although a few samples were taken, yielding dates older than standard by hundreds of years).
So for example, the Step Pyramid may be more recent than the Great Pyramid, the reverse of the standard. Which raises major questions ...