>>89679612The GUI is providing visual cues that prompt his memory to allow him to use the computer. It's a visual aid. For example he doesn't remember the names of his programs so he can't type them. He relies on taskbar to show his open applications. He uses those numbers to tell him how much space he has left on his 4 hard drives which I'm assuming is his method of categorising his files.
He uses window7 because he has a TON of old programs that don't have linux/windows10 equivalents.
He wants a GUI that operates in a way he can intuit and matches the way he already things. He split his programs by surface and core because he imagines his computer like a planet so there's a lot of autism/theorycrafting already there to work around.
That said everyone wants to use a program or operating system that works in a way they can intuit or understand so that's not really trashing him.