The stigma of arranged marriages being bad is more because of the act of forcing the man and woman to marry each other without their approval rather than the concept itself. The modern concept revolves around letting the man and woman choose their own partner in a more practical way based on various factors important to them. Though some still practice it in a way that can entrap people in a marriage, forcing them to be unhappy because they weren't given a choice. Then it's mostly a forced marriage rather than arranged, and an arranged marriage doesn't mean it's forced marriage.