The intentions probably did start of pure and then you get to the point where it does go so far it's counter productive. and it comes down a lot to probabilities, and fly's in the face best person for the job. Like if your an engineering firm but are required to have 50% of your engineers as female, you are likely over looking many much more competent engineers because the pool of talent is significantly smaller, you could luck out and get the cream of the crop, but the odds are not in your favor. Personally I think diverse work places are great, I just think they need to develop organically, might not happen straight away.
That said we seem to be going backwards as a society. Sex, Race, Sexual Identity seem to be three things everyone is always making a big deal, they are the three least important parts about it. There are times where some of those factors have their time and place, but by and large I could care less if someone is a Black Asian Hermaphrodite Polymerous furry. I care much more if they a nice person, an asshole, or just completely insufferable.