This kind of thinking obscures the fact that Plato and Aristotle have a lot in common and that they have marched hand in hand for two millennia. The successful periods of history are those in which the intellectuals and politicians have been inspired by both Plato and Aristotle.
In Ancient Rome, attention was being paid to the teachings of both the philosophers and the same was the case during the Roman Empire. To say that Thomas Aquinas was only inspired by Aristotle is incorrect. He was heavily inspired by the Platonic thought of St. Augustine, and through the works of Boethius, Pseudo-Dionysius, and Proclus, Aquinas picked up a lot of neo-Platonism. In the works of Aquinas, Plato and Aristotle are present in equal measure.
During the time of the Renaissance and the Scientific Revolution we see a focus on both Plato and Aristotle—some scholars prefer Plato, some Aristotle, and many are pursuing the study of both. The Scholastic thinkers of the Renaissance mainly pursued Aristotelian studies, but Plato dominated most of the universities of that period. Coming to modern America, the founders were familiar with the works of both Plato and Aristotle.
Some of the worst political disasters of the last 250 years have been orchestrated in the countries where the wisdom of both Plato and Aristotle, or either one of them, has been totally ignored. The Enlightenment thinkers, who gave birth to the bloody French Revolution, didn’t like Plato, while the Marxist thinkers who created the Soviet Empire didn’t like Aristotle. And irrespective of what Popper says, Hitler and his cronies did not learn anything from Plato and Aristotle. The history of two millennia teaches us that a synthesis between the ideas of Aristotle and Plato is a necessary condition for having a nation with good culture.