The ‘diploma democracy’ may be one reason for political discontent of some groups.
People with a higher education fill parliaments, council’s, civil service. They have other interests and concerns than people with lower education.
In Holland, M. Bovens and A. Wille found that at least 90% of parliamentarians have a higher education. And if 70% of the population doesn’t, it’s plausible that some people get fed up with those “Ivy league types” running the country.
If we look at society’s persistent problems: crime, traffic, poverty, economic development, education, health care each of them has a national and local department dealing with them.
So if people think no progress is being made on those issues, they could easily blame those departments for it.
I can relate somewhat.
I once attended a meeting with mostly government middle managers. At my assigned table we made introductions. I said I was an inventor, since I had just developed an expert system. Interestingly, no one asked me what I had invented.
If we only want to talk to people like ourselves, it will create a distance between us. From there, we may only need a little push to turn us against each other.