You can however do things like refuse to give evidence to torpedo the court case if you wanted to functionally “drop the charges” but if there’s still a chargable offense in the eyes of the police and credible evidence otherwise then the court case can still proceed regardless of your feelings.

It's contrary to the human right of freedom of speech. It's bad for all the same reasons that lèse-majesté laws are, but is even worse because its scope is so much broader.