Re: "by the size of his Micro Channel Adapter"
"the ability to pull apart a PC in seconds with that small blue lifting tool under the hood of the IBM PC"
The early PS/2s were like that. Older models, not so much.
But the article also brings back memories of a summer job writing code for a now-defunct company(1) whose main product was project management software. This was 1987, so Microsoft Project was some way in the future, and the software ran on a wide range of mainframes and different sizes of minicomputer. What would today be the server room had an IBM 4300-series something or other, VAXen, a Wang, probably a DG thingy, and so on. (The office was in Westborough, MA, if that helps.)
Anyway, there was this big contract with IBM, and my fellow student and I were provided with brand-spanking-new PS/2s, a desktop Model 50 and a tower-format Model 60. Trivial to open and dismantle, with floppies full of ADF files, especially with the 3270 terminal emulator cards we got so we could log onto the 4300, produce text-mode data dumps from the software running there, and download it onto the PC for post-processing to produce graphical displays.
And of course, the IBM contract provided those cards, which duly arrived and they let us two students loose to install the cards in the machines, and then to install the support software.
And there was the pen plotter. For an American size of paper, approximately the same as A1. It had a bar over which you draped the paper, and the head ran left/right along that, while the paper moved front/back. We had fun putting weird colour combinations in the pen carrier and then plotting things. The manual included detailed instructions, with pictures and words of about 0.75 syllables, on how to put the mains plug into the socket. (The socket on the wall that provides the electricity.) There were similar instructions for the other end of the cable, with just a normal kettle-type plug.
Fun times. (To say nothing of the 3.5-inch external floppy drive for the PC/XT on the other desk. It was mounted on its side, and the friction between the edge of the floppy and the bottom of the drive was low enough that the eject button could throw the disk entirely out of the drive and onto the floor.)
EDIT: forgot the footnote.
(1) "a now-defunct company": these words feature a *lot* in descriptions of my career. Maybe I'm cursed, or maybe I'm just bad at choosing companies