The question is not what file does Notepad create, but rather, will it read correctly the files with just LF, or not. I suspect that it will, but even if it won't, there's still a good reason to have LF by default: suppose you add a file to Text.app repository on Windows, editing it in Text itself. Suddenly, it's has CR LF's and all kinds of standard unix tools may work incorrectly on it.