The use of "don't" instead of "doesn't" in popular music - especially country or folk - is very widespread. You'll see some good answers to the question here, for example: https://www.englishforums.com/English/DontInsteadDoesntSongs-Lirycs/gxmwx/post.htm It's used to mimic a certain style of speech associated with an imagined community in rural, typically low-income areas. It's an attempt to imitate the way the singer thinks these people speak and appeal to them by showing that he is "one of them."