The founding fathers understood that a pure democracy is a dangerous form of government, so they tried to structure a workable republic. For various reasons, having mostly todo with slavery, that original form of governance ended in a bloody civil war. Ever since the United States has been moving more and more toward a pure democracy.
The trouble is that we humans are not wired for democracy. Democracy always ends in squabbling gridlock until broken by a ruthless demagogue who often brings order out of chaos via a rein of terror — a Trump strongman type. Alas, in the end humanity is always controlled one way or the other by the rich, powerful and ruthless.
As far as taxes go, when taxes are quite high lowering taxes will certainly simulate the economy. When, however, rates are lowered below a magic means number, the government and all it vital services, like air traffic controllers, teachers and firemen (things that are taken for granted), is starved for funds and the economy is smothered, especially after a reckless private sector has blown up the economy by greedy, stupid deeds.
Yes, a lack of nuance is like those who only care about the obvious part of an iceberg above the water line. They are missing much.