There are quite a few inaccuracies in this comment for one sentence. MacOS and before it Mac OS X do not have “Linux” roots. The operating systems are based on

There are quite a few inaccuracies in this comment for one sentence. MacOS and before it Mac OS X do not have “Linux” roots. The operating systems are based on Darwin which has roots in FreeBSD (which is emphatically not Linux). You could say it has Unix roots or BSD roots, although they have diverged significantly. MacOS for example runs on a Mach micro kernel rather than the monolithic kernel you’d find in a Linux or BSD distribution. As far as the user land goes MacOS does ship a full BSD shell environment and not a GNU/Linux one.