Except for the Grote case you can very well criticize politicians, even in somewhat questionable language without LE raiding your home. That one case was an exception.

Just look at any political thread in any social media in German language. There is plenty of criticism or even insults regarding government officials, without them getting raided. It is only extreme cases (often with calls for violence) which trigger LE. So the chilling effect is missing or at least it has little influence.