This is the world Richard Stallman predicted, and "we" [1] - developers with the most power and the most to lose - are leading the charge head-first. I am just old enough to remember the Bad Old Apple of the mid-90s, and this nonsense does not surprise at all. Apple has had a good run playing the Unix card; developers buy Macbooks in droves because "it's like a Linux that just works". But just wait a few more years until the Terminal is apptimized away. The waffling non-open-sourcing of Swift should have been the final clue.
[1] the only apple product I own is a 2nd generation iPod in a drawer somewhere. I still hold myself responsible.
No, they are not. That is the whole point of parallel construction.