Hi citizenschallengev4,
The platinum rule the article quotes is
“Do unto others as they have explicitly informed you that they want done unto themselves.”
I do not anticipate making a practice of asking everyone I might interact with to explicitly inform me what they want done to them. Except for some unusual circumstances, it is not a practical rule for guiding morality. But perhaps you would like to try it out on everyone you meet and see how it works? The Golden Rule is a practical rule because people commonly, but not always, want similar treatment.
But what irritates me most about the article is the way it is so carelessly factually wrong. If you knowingly treat someone the way they would like to not be treated, then you have violated the Golden Rule. Do you want to be treated the way you do not want to be treated? No, of course not.
The Golden rule is commonly said to summarize morality because it advocates initiating perhaps the most powerful cooperation strategy known, indirect reciprocity. But if you know how they want to be treated you should start with that (rather than how you would like to be treated) and the chances of cooperation ensuing will be increased.
Rest assured, no one who has thought about the issue will knowingly treat someone in a way that reduces the chances of future cooperation and think they have acted morally (except in unusual circumstances such as when dealing with criminals and in wartime).