Even Older knowledge carried weight
You aren't wrong in here. Time will tell when these archaic, redundant knowledge would come in handy. What a person values and another do not will come to a realization later on.
Some people still get surprised how smartphones could make you earn a lot and that is because they haven't been able to understand how to go about it because of lack of knowledge. Someday, they will come to realize how they didn't value such tool when they should have because they have the belief that money gotten from a comfortable place instead of going out to work is illegal. I still have kinds of them around me.
I have programmer friends who are agile and strong and they're home coding and earning the bits they can, they prefer it to the peanuts Nigerian companies pays. I hope the light will shine on Nigeria someday and change the ideologies of people.
They really need the change so as not to wallow forever in ignorance.