It's a great thing because if you break the awl you dont have to throw away the haft. Sharpening takes time and costs money, meaning the awl blades would cost alot more. Heres the instructions unscrew the tip stuff in the blade and tighten it back up.
There is a learning curve for this craft much more than just leather you have to learn how to use and sharpen most of your tools at some point. I've found the easiest way to sharpen an awl is to set it in a small vise and sharpen it by gluing 1000 grit or so sandpaper to a popsicle stick. set each face of the blade flat, polish it with a sandpaper stick, rotate the awl blade, and do the next face until sharp keeping the faces straight and true.
oh and just sharpen the tip you dont want the whole edge sharp.