Earlier quoted context omitted.
He worked there starting in 1982. When do you think the dot-com era started?
He started in a greenfield industry , the immediate pre-requisite for dot com era, then through the dot com era. There was no institutional knowledge when he started, and a good portion of it would be irrelevant when he quit. It was all new.
No need to keep going back and forth on this as you seem to have dug in your heels.