Or a time when those small brands she is wearing will grow because she championed them
Well yes, an unknown brand getting any sort of media coverage is a win for them, sure.
But that doesn't change the fact that for Meghan, going from custom Givenchy to an AI merching site is a distinct downgrade.
You don't seriously think it's an active choice for her to dress in unknown brands, do you? She's doing it because no major fashion house wants to work with her.