Usually the quote comes in a positive light. We won’t make a law/rule around it, it’s a principle so it’s meant to be short. So yeah you could argue about anything in any way you want, positive or negative. And if you want to be really precise then you make a law but it’s so precise it won’t cover edge cases. Don’t you agree that the baseline for most humans is to be in peace, find love, patience, joy, kindness, mildness ? You can manifest any of those traits to any stranger and you’ll likely have a positive impact right ? That’s the context of the Golden Rule quote I guess

That's not the human norm though. Doubt an average human way of existing is literal torture for some obscure number of people. I think you're missing the forest for the threes with that BDSM example. You can always find isolated examples as counter-argument for basically anything, but in reality that's an obscure number.

Due to the complexity of our reality a lot of things find themselves on a spectrum, but in numbers things are pretty clear.