Gaudy

Why are dictator-led societies so gaudy? The main definition of “gaudy” is tasteless. It must have been imported directly from German. Perhaps they got it from the Latin. Gaudeamus igitur. “Let us, therefor, rejoice.” So gaudiness is supposed to be an expression of joy? To counter the drabness and mediocrity of dictatorship? Does that explain the insides of Catholic churches?
I was actually attracted to the plainness of the monks’ and nuns’ attire.