Yeah, but if you actually write an application that forces use of the MS SW implementation by actually renaming the file and then renaming it back at the end of program, and I have to debug that program, I will personally hunt you down and make you wish you had never heard the word “OpenGL” in your life.
If your app just sets the FSAA registry key, I won’t hunt you down and torture you, but I will scream in agony.