I honestly admire the fashion editor. Her life is laser focused on looking great and tracking the developments of high fashion. Events that shake the hoi polloi to their core barely even register to her. A queen.
But this is the wiki entry: “Some linguists argue that, given that hoi is a definite article, the phrase "the hoi polloi" is redundant, akin to saying "the the masses". Others argue that this is inconsistent with other English loanwords.[11] The word "alcohol", for instance, derives from the Arabic al-kuhl, al being an article, yet "the alcohol" is universally accepted as good grammar.[12]”
This sort of unsolicited "correction" of other people's language is unnecessary and basically never helpful outside of an explicit educational/language-learning context. The goal isn't to perfectly communicate according to a specific set of rules, and trying to ossify the descriptive "rules" in that way is just prescriptivism but slower. The goal is to understand and be understood, which will always be a context-dependent moving target.