What your link points to is the BSD license, so yes, he owns the copyright but also gave everyone permission to use and modify the code as they see fit. There

What your link points to is the BSD license, so yes, he owns the copyright but also gave everyone permission to use and modify the code as they see fit. There is nothing that prevents anyone to use this code in combination with proprietary code and sell the resulting project for money. If he didn't want that he would have chosen a different license.