I am being serious, this was during 1994 during the hey day when this came out as being new.. Yes it does draw without acceleration but it's pretty darn slow.
I know for a fact that OpenGL opens a screen buffer using a direct draw style surface. I learned this in Redmond back in 1994 itself.. If you want me to grab the documentation to this stuff provided at multimedia bootcamp 1994 I will gladly go ahead and scan in the documentation and the block diagrams so you can read through it.. I remember someone from the OpenGL team commenting they needed to find a better interface to the graphics cards.
NT 4 Workstation was never designed as a games workstation. Microsoft added Direct X to Windows 2000 (NT 5) to change all that and attempt to reposition that away (to move people away from dos based windows (the last incantation of that being Windows ME).
Microsoft advised against playing games on NT 4 and kept developers away for the longest time. They stuck to open gl cause it was there (but that version was intended to stick NT in the visualization workstation market, not with games.
Quake 3 that you mention is a windows 2000 product that just happens to run, cause 3rd parties went in and wrote drivers that did this, but never because microsoft wanted it, they just wanted a visualization workstation to compete with SGI/Sun..