I was there in the DOS days. I was there when Windows 3.1 came out (others too but I didn't use them). I was there when Windows 95 came out.
Microsoft has never been about "pure technical excellence". We had wonderful machines (Unx ones and then stuff like the Atari ST / Commodore Amiga / Archimedes) and amazing OSes (including Unx on workstations) and Microsoft nearly destroyed everything with the endless turds it produced that ran on cheap beige PCs. Not excellence. Mediocrity. Cheap, but mediocre.
At some point 95% of all machines sold with an OS had Windows and the times were incredibly dark. Thankfully things changed and now Windows is only present on something like 11% of all devices sold yearly that have an OS.
We dodged a big one and many of us shall never ever forget how slow, insecure, horrible and mediocre the products of that company were.