Someone who does not know all his facts!.
Electrostatic discharge can cause a current flow that is not significant enough to cause total failure, but in use may intermittently result in gate leakage causing software malfunction or incorrect storage of information.
Next time you are flying, just consider the above.
At Lucas we ALWAYS use anti static straps due to the above scenario, if a component always immediately failed when subject to ESD, then it would be detected during testing, but it's the partially damaged scenario you don't ever want.
The same applies to PC components, so always use an anti-static wrist strap.