Imagine for a minute a diversity officer had been in charge of The Beatles. Hmmm too much straight white male here. Let's drop John Lennon and replace him with a black lesbian, that'll help. Hmm still too straight and white. Ok Paul can go and we'll bring in a brown trans-man. Off you go George, we need more diversity, we'll have a bisexual non-binary person please.
Now at this point what you have is Ringo Starr plus diversity hires. Is the Beatles magic still going to happen? Who knows, maybe a new amazing band might be formed, but we've sure as hell lost the magic we have today. My point here is that creativity and art is lightning-in-a-bottle. It's a product of people and how they relate to each other, the skills they have, the experiences in their lives, and a certain amount of randomness of the right people getting together at the right time to create something wonderful. Think Bioware around KOTOR, think the Bitmap Brothers in the early 90s, think Bullfrog in their peak years, think Sensible Software. All of them were wonderful with a specific set of people, and started to lose their way as some left and others came in - the lightning got out of the bottle and they couldn't put it back in. Creative magic is an impermanent thing.
If we start meddling in teams that may well be successful (and let's be real - those are the ones it'll happen to because those are the ones who will be targetted and who are the most prestigious) we'll end up with something just not as good.
The thing that amuses me here is that, as others above have observed, this is about trying to protect companies from litigation and bad press, in theory. Here's the problem. Diversity officers will push out the people who aren't likely to sue (try being a white male and suing for discrimination), who aren't likely to cause bad publicity (because the press doesn't care about white guys) and bring in people who are.. not so much. Having removed people who don't sue they replace them with people who do - people they will really struggle to fire if they're incompetent because if they do they'll be hammered for discrimination in the courts, or worse in the media (where of course the standard of proof is effectively zero).
One more thing. Guys will solve a problem one-to-one. They'll maybe insult each other, have a fight even (though this isn't usual in an office) but in a fairly short space of time they'll be working together to get shit done. Women, not so much. They fight socially, and they hold grudges. Managing these groups will be a much harder task, dealing with much more toxicity, all to meet a quota. Instead of a largely self-managing group one ends up in what is effectively playgroup, having to deal with "waaah he said a mean thing" and "waah she's a big meanie" as one deals with people who prefer to run to an arbiter instead of self-managing problems.
Last thing, I promise. Games development is hard. Most of the skills required are a product of obsessive self-development. There's a reason most programmers are autistic. I can tell you now that those guys will get absolutely torn to shreds in a female-driven political office, they're not equipped to deal with it (hi I'm autistic - I spent some time as a teacher, the ultimate female-dominated highly-political environment, it was hell, I'm back to programming and it's great). In the end it's going to discriminate against people who have carved out a space, who are often rejected outside of that space, and I honestly don't think that will end well. Just as importantly however, good talent is really hard to find. If you start making the environment one in which your talent doesn't wish to remain (and I've seen it happen - I worked at a web dev company and a similar made-up-job person came along, a 'change consultant' and started asking us all what kind of animal we were - almost the entire programming team was gone within 6 months) you face a problem. Where do you find the new talent? How do you cope with the lost knowledge (remember that while good practice dictates that things are documented, there will always be bits of knowledge and company memory lost as people leave - those things prevent repetition of past mistakes)? All of this is BAD for a company's bottom line.
Your argument is fundamentally flawed because that is not what a diversity officer should be doing.
Certain types of people get attracted to these jobs and build empires (if you've ever encountered a HR department you'll be aware of that). Focus not on what it should be but on what it is and what it will be.