No. There is no such thing as the so-called Platinum Rule. It doesn't exist except for narcisists attemtping to inflict their will onto others.
The Platinum Rule is basically a one-sided Golden Rule: "Meet my demands because I am more important than you.." Some rule. It sucks. There is no responsibility. The Platinum Rule was obviously crated by fascists.
It is not difficult to apply the Golden Rule to the child growing in the womb. All you need do is ask ANYONE, "Would you like to have been aborted, killed before you were born?"
99.99999% will answer an affirming NO!
This has nothing to do with being spiritual. It's purely a matter of not doing something evil. Evil is alwasys defined as doing something to someone you would not done to yourself. It's a pretty simple equation, actually.