Article argues that diversity of ideas is what's important, rather than diversity of ethnicity/gender, describes trying to solve racial/gender diversity for its own sake as "utterly broken".

There's plenty of evidence that women and people from under-represented groups are discriminated against because of their identity. Here are a few on gender alone: [0][1][2][3][4]

Perhaps there are cases of people being discriminated against for having "diverse" opinions, but it seems like a distinctly smaller problem, as witholding a controversial opinion is an option and witholding your existence is not.

[0] Female students seen as less competent than identical male students with identical application materials, offered lower starting salaries (Moss-Racusin et al, 2012)

[1] People in gender-incongruent roles penalised more heavily for mistakes (Brescoll, Dawson, & Uhlmann, 2010).

[2] Voluble women perceived as less competent and less suitable leaders, inverse true for men (Brescoll, 2011).

[3] Women who succeed in male-dominated fields percieved as not likeable (Heilman et al, 2004).

[4] Students question the competence of female teachers who evaluate them negatively, less so than male teachers (Sinclair & Kunda 2000).