It's arch. It just happened to be the composition i had my previous arch setup as. Yay for AUR stuff, KDE Plasma for DE. Includes a couple of useful tools and makes for a very solid OS.
Anyone who has been in the Ubuntu sphere of things with Linux, should take a moment to try arch. EndeavourOS is perfect for these people.
It's not her real voice. She got recognized for it, but her actual voice is very regular.
https://www.youtube.com/watch?v=1DJ8B1ek_L0