story
Maybe I’m in some sort of bubble.
Statistically speaking there was no "most developers use this", but the closest OS offering was Windows at 45%.
Given Apple's poor performance on the OS side the past few years I'm not sure the hardware has managed to keep users on their side anyway; they even lost DHH very publicly not that long ago... So the numbers might be even worse now.
Edit:
In the latest StackOverflow survey 31.8% of developers report using MacOS (for personal and professional use), 57.9%/47.6% for Windows (personal/professional use). So both MacOS and Windows are eating into Linux's share at the moment, with Windows offering them to instead run Linux inside of Windows.
More recently (2017ish), I was on Windows 7 for another stint at graphics.
Maybe I've just had the misfortune that others have been able to avoid??