There is no one-size-fits-all answer to this question, as the best answer depends on the specific needs of your organization. However, in general, hiring a ES5 developer can be beneficial for organizations that want to improve their web development capabilities or create more interactive web applications. Additionally, developers tend to have strong skills in JavaScript and other programming languages, which can be beneficial for organizations that want to develop complex web applications or need assistance with code maintenance and troubleshooting.