As technical people, we tend to have a bias that we're better equipped to understand things than anyone else, but that's often not the case. Many, many of the things out there don't just require the ability to use Google and do math, but also those things engineers are notoriously bad at like understanding human systems, compromising, and communication. We also don't have any particular advantages in knowing things outside our domain of expertise. An all-engineer government is definitely not an ideal.

I dont think that techies are outlier here. Despite the profession, most people think they can do their boss's job better.

One thing to keep in mind is a lot of engineers don't want to work in management and/or don't have management aspirations. Steve Wozniak is a pretty good example.

Personally, I work as a chem/materials engineer if I were to move into a management position I'd have to give up doing technical work and step into a more administrative role and that is something that does not really appeal to me.

I think similar thing for politics, there doesn't tend to be many scientist or engineers running for government because that sort of thing isn't very appealing to people like me.

“I’m smart enough to program a computer and that’s really hard so anything else would be easy for me to do.”