I mean, elitism refers to a dominating class so to spawn an argument about ethnoracial issues from there is not that much of a stretch.I mean.... you also diverted off in your second post into making it an ethnic/racial issue. You didn't simply confine it to "elitism."
And frankly most of your assumptions are rooted in what appears to be your own personal issues and outlooks.
Most of streetwear, casual wear, and workwear shows the influence of diverse ranges of people from different socio economic backgrounds.
If you are construing fashion as "classic menswear" then you are maybe closer (though still over simplifying). But CM these days is but a tiny sliver of most fashion houses dominated by streetwear and workwear.
If you really think that the white elite set all trends then please explain low rise pants and their dominance. Low rise came into CM as people got used to jeans (the ultimate non elite garment). And in general white dudes look shitty in low rise (because white guys already have short legs).
I guess I am referring more to classic menswear, which also triggers down to work wear as they are heavily influenced by it. If you look at many industry standards for what constitutes a professional work outfit across the globe, most have adopted the western dress code. And even in areas of the west with diverse populations, there is an expectation to to conform to traditions held by the dominating class at the time. Many colors that are typically celebrated by cultures in Africa, Asia, and Latin America are muted in favor of the conservative stylings of British-American traditions.