But then--you were also wrong.
By the time Linus posted his now famous usenet post, 386 PCs were pretty standard, but PCs with Windows pre-installed on them were not. 1991 was still the era of Windows 3.1, and no standard software images were being installed pre-sale. Since he lived in Finland at the time, it's difficult to say with certainty whether he had ever had Windows installed on that machine.
I don’t think the details matter much, as long as I was wrong.