If Germany's constitution allows vaccine mandates, then your insistence that it protects all human's rights will be of little comfort to the people who are forced to take the vaccination without their consent and in violation of their conscience.
At best you are saying "Having control over what medical treatments are done to you is not a human right", and at worst you are saying "Antivaxers aren't human". Either way, you are putting too much trust in a system that claims to protect human rights, and totalitarians generally manage to find a way to twist the law to justify what they are doing, whether the excuse is "military necessity", "medical necessity", or something else.