If it is a skill, mastering German will have certain advantages in the work. If you are very interested in German culture or the culture of German-speaking countries, it is especially good to master German. But if you really want to take German as your career, especially if you want to teach German in colleges and universities, you are already saturated. Therefore, if you want to study in Germany, or need to use German as a skill at work, people who know German will definitely have a good development prospect. But we should not only embrace German, but also have other professional assistance.
I just think that driving now is a skill, not a profession, and so is knowing German!