The American political system occasionally having a terrible choice is one of the tradeoffs for having power be changeable without bloodshed.
Because of lifetime appointments the US legal system is nearly a technocracy as you describe. It arrived at a decision in 1971 that a wide swath of the body politic was so opposed to that they essentially lost all faith the status quo. What followed was a decades long campaign to shift that pseudo-technocracy. Not a bloody insurrection.
You and I may disagree with their position, and we both dislike some of the results of their movement, but the worth of a government form is how well it responds to such discontent.
I don’t think you’ll get any disagreement that the current administration is exposing some flaws in the American political system. But the potential fixes for those flaws are numerous, while a brand new system as you propose would have its own expected and unexpected flaws.
Let’s talk about those goldbugs, since anything else urges trolls to show up. If they’re in power what stops them from declaring that their opponents are “fake” economists? How would we remove them from power?
It sounds like you’re not proposing a technocracy, and are instead proposing a direct democracy with a bureaucratic civil service chosen by popular vote.
Which is a fancy way to have an inefficient and easily gamed democracy. As is done in Iran and Russia.
If “people vote” is a core and meaningful part of any system, that system is democratic. And inefficiencies in democracy are always and only ways to prevent the people from getting what they want.
If you don’t see how avoiding bloodshed for power changing is a fundamental advantage of democracies I think you may want to re-read your histories. The ONLY way power ever changed hands from one group to another prior to the American election of 1796 was through violence or the threat of violence.