I think managers often have the low IQ in terms of the actual work but their only IQ needs to be doing to manage the people.
I feel competitive advantage with AI these days is under threat for many writers, designers and other workers. Because most of the competitive advantage people have is thought process which AI can't beat and apart from that I feel that things are kind of going in motion for a lot of shift.
So we have to think of changing our old ways because lot of our traditional things would be changing from workforce, money and even in terms of health too.
The interesting thing about the study, was that they still had above average IQs :D
I also feel that real experience and skill are going to be paid a premium over AI generation - but most people have little of both.