Great argument, can be applied to anything.

> it is easy to optimise for diversity

only in the most crude, ham-fisted way though.

it's extremely hard to find people who actually break the groupthink. it's extremely hard to even identify your own groupthink blind spots, let alone cover them with people with genuinely different perspectives. the crude diversity solution seems highly likely to select for people with superficial differences but core similarities.

The diversity that actually adds something to the understating of a problem, is the diversity of ideas and points of view. Putting different races, genders, sexual orientations, etc, just for the sake of appearing diverse, adds nothing to solve any problem.

you've hypothesized reasons why something should be automatically accepted, which is funny in cosmic poetry sense, but not terribly evidentiary.