Otherwise, it's as if you had a string of bad CTOs and then decide to hire a gardener with no tech skills as your new CTO.
Now, I'll admit that the US system of mostly only very rich people getting access to top universities is not exactly fair - but you can in principle become a politician no matter your background.
I don't think it's crazy to assume that qualifications matter. And most of the US's best presidents (such as Lincoln, both Roosevelts etc.) were highly educated and had had political careers before.
See e.g.: https://dictionary.cambridge.org/dictionary/english/aristocr...
Trump's success in only partly due to his inheritance though. I'd liked it more to a charismatic religious and authoritarian leader.
One of the worst travesties in any organization is when there are non-leaders occupying leadership positions for any reason. And that is already too common in areas where people don't have a choice.
It just seems unreasonable to assume that knowing how to govern isn't an important qualification for the job of actually... governing.