It may be hard to imagine, but my interest in that ship goes back more than 30 years and a lot of what I've read about it has never made it to the internet.It's obvious that whatever sources you using are inaccurate, to put it politely. CVN-65 launched with eight reactors and she was decommissioned with eight reactors. Which were de-fueled by Huntington Ingalls Industries afterwards.
https://www.navytimes.com/news/your-navy/2019/06/06/this-is-how-the-navy-plans-to-break-the-big-e/
https://www.military.com/daily-news/2013/07/25/navy-defueling-enterprises-nuclear-reactors.html
https://www.kitsapsun.com/story/new...-after-reactor-defueling-completed/532559002/
First, why did she have 8 reactors? Because that was the existing carrier design at the time. The Forrestal Class had 8 boilers for 4 shafts and so that is what they gave the Enterprise. For the Forrestal, they were necessary because they would frequently need to switch boilers for repairs. That was never necessary for Enterprise. She only needed 4 steam plants for her engine design. According to what I read of her Service Life Extension back in the 90's (and I read an extensive breakdown of what they did to her, from lowering the watertight doors to deck level to deactivating some reactors that had never been used). Removing any of the reactors is impossible without tearing the ship apart (as the current ongoing issues are proving). I can't remember the full details of what I read, but suffice it to say that she never operated on 8 reactors because she was never designed to operate on 8 reactors at the same time, only 4. That number was reduced to 2 for the Nimitz Class.
Enterprise was defueled immediately on decommissioning. It is what to do with the reactors themselves that is taking a long time. Once a reactor is fueled and activated, it requires the same handling whether it was run for testing or run for 50 years. So nothing about the current issues in any way counters what I remember reading a quarter century ago. The information was unusual and stuck with me. It basically was about how 8 reactors were never needed and they redesigned the system for the Nimitz class to run on two larger reactors. And what I just googled does not directly confirm my memory, but the information how the design paralleled the then in service Forrestal Class drive train is remarkably similar and does make what I remember plausible. So does the information that the Enterprise was grossly overpowered.