Re: Does it really make any difference whatsoever?
I understand your reasoning, but it's not really being forced underground, for large companies at least.
"doesn't know that the company he is interviewing for only employs his specific "type" of person so gets to be super disappointed when he turns up to an office full of his clones."
Most big companies now publicise the diversity of their workforce and even make it a "Unique selling point". Of course you are right that any company / department manager can choose to hire only white men, consciously making discriminatory choices. However it would soon be evident that the company workforce vs other companies or the department staff vs other departments in the same or similair companies have a very different composition.
As another commenter said, it should be about equality of *opportunity* not equality of *outcome*.