People can be petty. I've seen no shortage of candidates get passed on because of spelling mistakes or something equally silly, and it happens a lot more than you'd like to think. Maybe the resume reviewer is having a bad day, or their dad told them "people that do X are dumb" and so anytime they see X they think someone is dumb. I've even worked at places that fast-tracked candidates from USC because the founders were from there.
People are biased, and those biases will come across.