He's not dellusional, he just don't have a clue of whathe's talking about and just throw around keywords and try to look smart.
As longas you're not familiar with the subject it works well.
remember when he told programers to print some code they wrote previous weeks ? Or when he tried to impress people with his knowledge of PoE2 and Diablo 4 ? Qe has done the same for decades, at spacex and tesla as well.
It's a known fact that SpaceX have an entire eam of full time people whose job is listening to elon bullshit and being the yesmen so he feels validated, then actual engineers take decisions.
IIRC there were the same with tesla and for some reason the system stopped working. And then, the cybertruck happened.
There are multiple way to de this. The easiest solution would be to une a second disk with same size or bigger and clone the current one onto the new one, using dd or clonezilla
if you have enough size on your dis_ for a second root partition, you can use dd to clone the existing root partition in the new one, edit /etc/fstab on the new one to point to the correct root partition, and us grub-mkconfig if you use grub, use grub-mkconfig to reconfigure it. It should automatically detect the new partition.