This is true of Ubuntu as well. You have to run "apt-get install build-essential" in order to get a compiler. This might be easier than on a Mac, but regardless it's disingenuous to say that Mac is not a Unix because it doesn't come with a compiler.
(I use Ubuntu regularly and have never owned an Apple product.)
> That said, really? It doesn't come with gcc anymore? I find this offensive.
Lots of Linux distros don't install one by default, and this has always been the case. For that matter, for a long time, Solaris (unquestionably a UNIX) didn't come with a compiler.