This little file edit is properly not the biggest thing that has happend, it's more like a learnig progress. You will properly see many "unimportant" edits before someone can put all they have learned into somthing we all can use. If you excpect someone to go directly from Geohots hack to homebrew, you're excpecting too much.
BTW, I'm not an hacker, but I understand that you need to learn A LOT before you can exploit the PS3. If you're looking for homebrew, come back next year or the year after