Your definition of diversity is simply wildly different to mine. Diversity to me, and the way that my company uses it, means people different in many ways. One of those ways is male:female ratio and understanding why my company lags behind others in terms of numbers but females being in the employ of the company is not more important, in any way, than any of the other areas.
You may find it irrational, you may believe it to be discriminatory, but I disagree wholeheartedly. It's not about judging people on their capabilities depending on which arbitrary groups they belong to but ensuring that no-one is denied opportunity based on the very same groups.
That's an important difference.
That's not what I consider irrational and discriminatory.
It's also not something that bears any resemblence to what is usually meant by "diversity", which is entirely about which arbitrary groups they belong to (and almost always only sex and "race") and about denying people opportunities based on those groups.
That's an important difference.
"Diversity" in its normal usage is pretty much the opposite of actual diversity because it depends on and reinforces the assumption that people in the same group (sex, "race", whatever) are all the same when in reality those groups aren't even groups in any meaningful sense.
I'll try to illustrate my apparently very unusual viewpoint with a real-world example.
Most of my coworkers are "white" women. At some point, by chance, there is probably a time when all of those "white" women and only those "white" women are in the same room at the same time.
To me, that room contains a diversity of people. The trivial unimportant coincidence that they all happen to be of the same sex and the same "race" (which it iself a fictional concept) doesn't make them all the same.
Almost all of those people are from the same area. All of them have an extremely similar socio-economic background and current circumstances. Almost all of them have a very similar level of formal education. Granted, my boss does have a higher income but her salary isn't very much larger than our wages. Not enough to put her in a significantly different economic position. Despite that, to me that room still contains a diversity of people. I see it that way because I don't think that people are defined by their sex, "race" or whatever other irrelevancies it's fashionable to see as being of paramount importance.