TLDR: He doesn't like the system preferences UI having the broad categories in a list on the left side, and he doesn't like on/off switches. Therefore, it's "the end of the sane UI as we know it".
Histrionic clickbait title or snarky superficial rejoinder?
Histrionic clickbait title. System preferences in terms of words ww understand not Apple insider icons is only a win as far as I'm concerned. No sorting order for icons that I ever learned.
Switched also used by other vendors? Oh the horror.
Now if all the secret handshakes and impossible actions in Finder could be replaced by obvious and discoverable actions like Windows Explorer...
> Now if all the secret [stuff] in Finder could be replaced by obvious and discoverable actions
'secret' knowledge about the plethora of keyboard shortcuts that are not listed in menu entries works almost like a conspiracy theory: they don't want you to know this but I'll let you in, stranger. Knowledge is power. Do your research. Be a proud fanboy.