No.
Kobold2D makes it easier to learn Cocos2D programming! You should learn Cocos2D with Kobold2D and skip all the hard parts (like installing templates, setting up a project, etc.). You'll get a lot more templates to get started and 100% working example code to learn from. And so much more.
See also this related question: Do all the Cocos2D tutorials and books work with Kobold2D?
