This was later—into their We U+2764 Open Source era. M$ and stuff dates from like the mid-late 90s. In the late 2010s was when they started publicly acknowledging that open source exists, acquiring GitHub, and releasing things like .NET Core and Visual Studio Code, and a lot of people in the open source camp did a "pointing soyjaks" and forgot that the Halloween Documents existed and that EEEing open source was already in their playbook.