>oh c'mon, if a technical person receives a piece of paper with a printed out user__name on it with the wrong number of underscores they'd just as likely make the same mistake.

A technical person did make the mistake, likely a police cyber forensics type.

But there's no one technical in the court room capable of reviewing their work and identifying the fault.

technical people developed the systems that print out confusing glyphs. it's certainly nobody else's fault.