Everybody is free to do what they want, this can be a fine learning experience...
However, what OP did wasn't cloning bitcoin, it was just recompiling bitcoin and generating a UI where the word "bitcoin" was replaced with "examplecoin"... nothing more, nothing less. His version would still use the bitcoin blockchain, generate bitcoin transactions, show the amount of bitcoins in the bitcoin addresses managed by the wallet, only the word bitcoin would have been replaced.