®Jewellery has not belonged to one gender in every place and period.
Achaemenid objects and court imagery include bracelets associated with male elite figures. That does not mean every man wore the same ornaments, or that one court convention describes the entire empire.
One historical image can challenge a universal claim without creating another universal claim in its place. A surviving object, a relief and an account of elite dress do not show exactly the same thing. Their dates, wearers and contexts matter before one example becomes a statement about an entire society.
It does give us a documented counterexample to the idea that jewellery on men is a purely contemporary or exceptional styling choice.
The design lesson is less about copying an ancient bracelet and more about questioning assumptions. Fashion rules often feel natural only because their historical range has been forgotten.