Well... For me and a lot of people, it's still good enough - it runs MacPorts, Python, I can compile things and so on, but, TBH, I also have a couple Linux boxes lying around on my desk and on the network one hop away from my desk, so the deep hackability side is solved outside the Mac in my case.
Had. That's what pulled me in to Apple laptops after spending the 90s convinced I'd never use a Mac.
With OS X, suddenly it was BSD, but with a Mac GUI! Cool. When OS X (10.0) came out I quickly bought a mac first time ever.
But Apple has spent the last 20+ years making OSX less and less BSD, locking out more and more core functionality into obscure nonstandard behavior.