For example.
Unlike other formulations of the Golden Rule, this formulation is enforceable.
"Something that is hateful against you, you will not do to your partner."
To do something hateful is punishable.
Also, it involves partnership, a mutual agreement to look out for each other. Responsibilities to each other. Reciprocity.
This legal principle is legally practicable.
As such, it is a more robust foundation for legal human rights − that are enforceable. It is a more sophisticated formulation of human rights.
Freespeech is a social contract among speakers in a conversation. Reciprocity.
Do not do hatespeech.
Humanity has a legal basic human right to be free from hatespeech, including death threats.