alt Hacker NewsMacOS isn't Darwin and comes under terms that do not fit rhe criteria of the exception. Apple actually did go to some lengths in the past to ensure that all layers of MacOS contained bits that they could claim restrictive licenses on.
A project like PureDarwin, however, can be freely distributed because it omits Apple's proprietary parts.
Macos contains elements that are open licensed. Many linux distros contain elements that are closed source. Where is the line?
This law describes as a true-false something that is not only true or false. This law is poorly written. Amending it didn’t fix that.