They're entire job is making a decision about an applicant where only a percentage is based on objective data. They read your personal statement and make a host of judgements, so I don't see how this would be any different.
Exactly. Whoever thinks admissions people, recruiters, or anyone else can fully put aside their bias to make a decision is scarily ill-informed. Most of it happens subconsciously. Thus the push for diversity among decision-makers in business, government, etc.
This is one of the reason why I consider the current anti-discrimination laws probably fundamentally flawed.