You’re confusing GenX with Boomers - the explosion in Tech was in the 90s, not the 70s.

Even then, most GenX weren’t involved in Tech since when they learned how to use it, it wasn’t yet normalized and widespread, so only really people who found such things interesting went for it, and generally the personality type of those attracted to power over others is almost the opposite of the personality type of those attracted to strict and complex logical structures as used in programming computers.