Hmmm.
Fortunately for me, I can use my local hard drive with all my music files on it on Windows, Mac and Linux without any issues (and MC installed in each OS). But, I can see what this technique is trying to accomplish even though I personally don't need it as I have cross-platform working fine. That said, accomplishing this would probably be an undertaking, I'm thinking. It's really not that easy to do something like this when the operating systems/file systems are much different to each other. I mean, I *could* see this viable for Linux and Mac, but Windows is a completely different beast when it comes to paths. I also share RoderickGI's opinion in that first thread too.
Then there's things that the user may have to be workaround for cross-platform in MC to work correctly, e.g. making sure there's no files or folders with a period preceding the name (e.g. .filename or .foldername), or else the Linux/Unix/Mac system will treat the file(s)/folder(s) as hidden, and MC won't import them. This was the main issue I had to workaround for cross-platform to work. Fortunately this can easily be done via the Rename, Move, & Copy Files tool with an expression when importing files on Windows.