Hacker News Reader

It does have stats for Developers' Primary Operating System[0]:

Windows 49.9%

MacOS 26.7%

Linux-based 23.2%

BSD/Unix 0.2%

Wow. I have no idea how I missed that. Mea culpa. Albeit those numbers are still radically different to the poster I replied to.

The most recent stats from StackOverflow are 25.19% macOS for all respondents and 30.04% macOS for professional developers.