It has exposed a lot of people to BSD Unix, which I think helped some. But outside of developers and hackers, most people have so little exposure to the Unix s

It has exposed a lot of people to BSD Unix, which I think helped some. But outside of developers and hackers, most people have so little exposure to the Unix side of MacOS X (and practically none on iOS) that it wasn't as big an impact as some of us (unrealistically?) hoped.