This article is probably the first time I 'get' why OS/2 was seen as the future and Windows 3 as a stop-gap, even without the GUI. The OS/2 GUI never really blew me away and every early non-GUI versions of OS/2 are mentioned it always seemed a bit dismissive.
But seeing it laid out as just the multi-tasking kernel that it is it seems more obvious now as a major foundational upgrade of MS-DOS.
Great read!