There isn’t much analogy with kosher practices. Do you know the explicit religious purpose of the hijab? It’s to maintain one’s modesty so as not to tempt men. Fuck that. Men are responsible for their own behavior. The religious purpose of the hijab is straightforward victim-blaming sexism. I won’t support a conservative, backward, oppressive practice just because it’s done by a member of a persecuted religious minority. That’s not white supremacism, that’s a basic commitment to progressive values.
I’m not saying we should ban it. In a free society people should be able to wear what they want. But we absolutely should not support it either.