Weak public servants mean strong private actors: that's what's currently eating the US republic from the inside. You have a few billionaires (Trump, Musk, Bezos, Thiel, Ellison, Zuckerberg...) able to buy their way into power and keeping the opposition down. Reducing taxation only makes these people even more powerful, and worsen the situation. You can't have democracy when some people are able to get this much richer and more powerful than the rest, it's as simple as that.