It makes sense to hide these files from many macOS users who don't care about them. For developers (who should be able to work with a Terminal) there's no need to resort to any magic or special command to make them visible! They are normal hidden files. A simple `ls -a` will list them too. You also have to put them in .gitignore as you put desktop.ini and other window managers' metadata files.

I wish the author explained in more technical detail or clearer how and where these files cause problems (not doubting that it does). In that case, it would have made a really useful article.