The following programs are for Linux only (The XDG Base Dir Spec isn't inherently followed for MacOS and Windows)
You should fix this. While macOS and its system applications and bundled applications don't adhere to the XDG Base Directory Specification; many programs that run on macOS do.
In fact, almost all of the programs you list run on macOS and (by definition) use the XDG Base Directory Specification. So I would clean that up to not give an incomplete statement.
BTW, the macOS directory structure [1] has been documented since macOS (MacOS X back in the day) shipped in 2001.
[1]: https://developer.apple.com/library/archive/documentation/Fi...