Mh... I agree with the title, not much with the content...
Back then as a student I was using laptops as desktop replacer, as many others, but when I seriously star using computers I realize that I need a desktop, with a decent keyboard and a thumb trackball. All wired. I realize how stupid big laptops are, since they should exists just for portability needs and on-the-go limited usages. NOT used docked, NOT used directly as a desktop replacer. The mouse here is somewhat substituted by touch screens for those who work on small laptops typically NOT on the go, but mouse means in many case just "consumption" not production.
Plan 9 have tried to be mouse centric, but ultimately fail because while some geek find the wow effect in drawing rectangles on a screen and filling them with live text it's just wasted time compared to free tiling modes like Emacs offer. Mouse is useful, yes, but definitively not the thing users forgot about computers.
Users forgot the CLASSIC desktop model, where they own the data and the system to manipulate data, bendable at their own will with few line of user-programming live code. Users have even forgot what's a file https://www.theverge.com/22684730/students-file-folder-direc... and as they are mostly unable to handle their own paper files they are equally unable to handle their digital files. They have lost the paper knowledge, but never acquired the computer knowledge. The mouse here count next to nothing.
Most people nowadays works like dumb terminals operators of the past with the important difference that the mainframe is not their own, but a distant systems owned by third parties "the cloud". Most people nowadays can't produce anything, only consume, choose stuff pushed in front of them by some ML system...