Maybe define your terms, “bourgeoisie” and “middle class”, and explain where you’re getting these definitions from.

• https://en.prolewiki.org/wiki/Bourgeoisie
• https://en.prolewiki.org/wiki/Middle_class_(disambiguation)

The term “middle class” has been so hopelessly redefined in so many disparate ways that it’s best to avoid using it altogether. All it does is muddy the conversation.

The Bourgeoisie was the "middle class" when the aristocracy were the upper class. The majority of the world is under Bourgeois rule, not aristocratic rule, any longer, ergo the Bourgeoisie is the upper class.

Bourgeoisie does not simply mean "middle class," it refers to a class of Capitalists. You don't adjust what the word means, but its context.