This is maby a topic you can bring up as a cultural thing. For sure germans need to be more open instead of creating a «Brandmauer» to conversations which are uncomfortable. But this culture is independent of this law.
There is no wrong speech police. Neighter has the police any part in deciding whom to target.
Germany has the devision of power. Therefor they need a court order to confiscate something. Therefore a lawyer already defined the wording of a person as attack against a person with no context of critique against any factual matter (since freedom of speech is protected by the constitution).
When the accused does not accept the decision of the first lawyer, there is still opportunity to defend the case in a court.
Is your critique agqinst this procedure? Or do you have specific cases where people have been finally convicted for expressing their oppinion?