The point would be that a mainstream man in 1750 wanted to be wearing colorful frilly things with high heels, even if he couldn't afford any of it because he was just a servant. Whereas starting in the 1800's, that stopped being an aspiration, whether you had money or not.
Also, while this clothing wasn't accessible to servants and laborers, some of it would have been to the growing middle class that consisted of merchants, professors, lawyers, and so forth. Just look at paintings depicting coffeeshop culture in the 1700's:
https://www.sylviaprincebooks.com/blog-list/2021/coffee-hous...
And coffeehouses were not reserved for the 0.1%, not at all.