One of the best things about no longer using macOS is not having to fight 'but Application Support/Resources/Nonsense/Foobar.app/Resources/config is the standard location on this platform!' ... The XDG base dir spec makes a lot more sense even on macOS for developer tools, but I'm glad not to have to worry about that any more.

On Linux that excuse is gone, so it's just either 'oops yes will fix' or 'agh, sorry, legacy'. Nobody (that I've ever seen) tries to claim something else is fine or better.