Quick search shows only like 30 of developers as a whole use Mac’s and I’m sure share is lower there because I know plenty of devs using macbooks that are running Linux or Windows. If we are talking game developers as a whole then that percentage of osx devs is far far smaller than the general usage. Windows using devs still dominate as a whole, Linux is not far behind, MacOS is a very vocal yet, smaller in reality group.
Windows has pretty great high dpi, Apple privacy is pretty awful and they hide everything they are doing, security is definitely getting worse on MacOS while the opposite is the case on Windows. And Apple still doesn’t super touchscreen which is an immediate deal breaker