The answer you keep providing is indicative of you not reading the question.
"If the information is on file, which it is, why should an error in which an individual put the present date in place of their date of birth prevent verification of one's right to vote?"
The information provided on the ballot can easily be compared to that which is provided on the voter registration record.
You asked me if a ballot should be counted if the voter's right to cast it can't be verified, to which I said "no", and I asked why the mere mismatched dates are sufficient in making verification impossible.