If you care about the subject this much and you think that everything was better before the 80s, then why don't you link to or name some sources you value?
To answer parent, I actually think better understanding of personality types and how manage people better will come with far better productivity.
The jungle of technology alternatives of how to solve business problems, causes a lot of unnecessary fights. It doesn't matter if you choose React, Angular or Vanilla JS. If your team is fighting each other, your team is not productive.
With this in mind, don't hire people that always agree with you, you always need someone to challenge you.
The industry oscillates. Each oscillation is a mirage that presents itself as a productivity gain but is in actuality an echo of the past.
Are the techniques we use today really more productive?
(In general, software engineers becoming vaguely aware of tech invented in the 1960s and 1970s is a huge productivity boon. If you, as a developer, want to impress your peers, you should take a couple hours to read what software engineers thought was obvious prior to 1980, when software engineers had a strong background in software engineering.)