The reality is that there are people out there who say things with the intent to create hate or to hurt people, they then claim that "I was misunderstood". That is not good enough and this law makes that very clear, You are responsible for what you say, if you can't speak without being misunderstood, then maybe you should do everybody a favour and keep your mouth closed.
But where do you draw the line? Is it not reasonable to assume that the intent will be understood when using and extremely common phrase?
Perhaps I misunderstood your intent.
If so, you should heed your own advice: “You are responsible for what you say, if you can't speak without being misunderstood, then maybe you should do everybody a favour and keep your mouth closed.”