Here's a quick example: You may have a blindspot to how hurtful something in your art or dialog can come across unintentionally. Having folks on your team with different backgrounds can catch things a homogeneous group might not.
Who the fuck gets hurt by art? I mean, if you talk about hurtful art or things that can make someone feel uncomfortable we should just cancel everything and just burn all books and paintings and buildings. That gargoyle on a church in prague looks evil, burn it down.
War-themed movies and games? Nah, can't have that.
Games with nazis? No, thats triggering even if you are supposed to kill all racistnazistscumbags. But that swastika may upset someones grandpa who was a jew and put in a camp. And we all know that you can be triggered by proxy and that is totally valid.
Loud noices? No, should be replaced with something less invasive.
Violence, no no way!
Nudity? nop!
Cars? no, what about the enviromentalists?
Bikes? No, i fell on my bike once, it could be traumatic to experience that again if I play paperboy so that should be wiped from existence.
Oh and offensive dialog? Well, remove all the words and cancel any game thats not "mute". GTA for example would not exist. God of war? No, thats religious themed game with the wrong religion.
Everyone has a right to be offended and everyone else has a right of not giving 2 fucks about it.
Diversity is your background, not your fucking skincolor or gender.
So we have 2 imaginary studios with the same amount of people in them.
Studio snowflake got "one of each". Its the "perfect studio" and it has all the Jason-certification and probably Anita Serkesian in the top because she knows whats up. They have one of every genders, colors, colorgenders, other disabilities etc. but they all grew up in the same town, went to het same school etc. most of them went to the same class.
Studio X
Just hires based on merits, nothing else. They don't care where you are from, they care about who you are and your skills.
The studio could end up pure white, black, yellow, green, purple or anything in between.
Who do you honestly will make the better game?
And why is studio snowflake based from the same city, class etc. and studio X isnt? Thats kind of unfair!
Because there is no diversity in the rainbowstudio, they all fucking think alike.
They are just looking for the image of diversity - translation less / no white men.