It its negative formulation yes. But Jesus gave it a positive formulation (more later). Instead of do not do to others…it is do to others!
And remember that Jesus is the Son of God - Who has always been…he is the Logos. Who enlightens men. All that is true and good - come from God.
Now back to the golden rule formulation:
Here this will be of great interest:
As I noted other formulations were in a negative form (which is of course still good) but Jesus gave it in a positive:
Then Cardinal Ratzinger (Later Pope Benedict XVI!) noted in God and the World (Ignatius Press) that the* positive f*ormulation of the Golden Rule by Jesus:
“calls forth, so to speak, the creative imagination of love. … in the end this opens up an infinitely broad field within the creative potential of goodness that can be developed…And this real self-giving, with all its creative imagination, with all the possibilities that open up to us, is expressed in a quite practical rule, so that it doesn’t remain just an idealistic dream.”