I know who runs that blog, but that's a really exaggerated take.

Notepad has had nearly identical UX from Windows 1.0 until 10. Sure, there's a search feature that appeared at some point, ditto with the status bar, at some point they made it able to open files larger than 64K, and apparently you can open files from URLs directly?

Five or so noticable changes in an extremely lightweight and utilitarian application in thirty years is not at all like completely redesigning it into an AI slop machine.