IBM has nearly all of it's developers on Mac at this point. I came from using exclusively linux for 10+ years and have decided to switch my personal machine to a Mac and my phone to an iPhone because it's been so good.
Mac has everything I liked about Linux but with zero cognitive overhead. With brew and a window manager (amethyst) I'm not missing any features I enjoyed in Linux.
edit: https://insights.stackoverflow.com/survey/2018/
It is quite high and to correct myself: Some developers have a Mac for iOS development. Most people I know hate it.