I know what you mean, but I think "The Golden Rule" only applies if both parties understand the concept. For instance, The Golden Rule can't be employed by a two year old, but I can employ it when dealing with the two year old, because I'm in control of the situation.
OTOH, it is not in my best interest to employ it with an adult that either doesn't understand the premise, or chooses to reject it.
Many of the most vocal of the current "free speech" champions will be the same people whining the loudest when the msm quite soon employs this very principle to up the vehemence of its far more habitual attacks on practicing Christians & Jews.,
I can't really see what they could print or broadcast to offend Jews or Christians that they haven't used already.