Why did men stop wearing gold?How minimalist tailoring conquered social status

From the show

Style and Status

Beau Brummell revolutionized 19th-century style by replacing aristocratic extravagance with the tailored dark suit. This move to democratize fashion inadvertently created a stricter hierarchy based on the perfection of fit. The business suit serves as a tool of leveling that paradoxically enforces a rigorous social code.