In such circumstances, mods may be judged by their decisions (which are informed by their character, their ethnicity, their gender, their social class, their interactions with thir colleagues, and their interpretation of the rules of the site).
Not consciously, perhaps (re race any more than gender, but both are relevant, as indeed is social class), but unconsciously, or sub-consciously, I respectfully submit, that such attitudes re race, ethnicty, gender, may influence interpretations of posts, which in turn, may influence moderation decisions.
This may not matter much - or, all that much, or, too much - on an individual level, but, I respectfully suggest, that when one has a preponderance of one group, or type, of person - i.e. when many, or most mods come from one ethnicity, one social class, one gender - then a sort of collective group think may arise when it comes to determining how one should interpret some posts that may be considered, or deemed, to transgress the rules of the site.
While this may be entirely natural, in the circumstances, it is also a very good argument for seeking greater diversity when recruiting individuals to the ranks of the mods, if only to broaden the perspective of the staff on site to some extent.