The problem with Chairman Mao was his belief of following the Stalin economic model of collectivization. When the CPC first came to power they did land reform which benefited the masses. This policy was excellent, as for the first time in Chinese history the poor were allowed to grow there own food with a small plot of land that was distributed equally. But China needed the money and a blueprint to industrialize its economy. This was provided by the Soviets in 1953 called the First Five Year Plan. History has shown what a disastrous policy it was.
Then in 1956 when Khrushchev denounced Stalin and stopped collectivization Chairman Mao didn't follow his counterpart. Mao didn't believe in the accusations put forward by Khrushchev and thought the revolution was being hijacked. A stupid mistake which cost the lives of millions of people.
But no one can't deny he wasn't a shrewd politician. Mao was a great reader of Chinese history and philosophy. It's funny how the population was told to burn the books while his own personal library was huge. His shrewdness is emphasized in the Lushan conference in 1959. He essentially told his friends to criticize him. Obviously, when given the chance they did the decent thing of telling him the truth. People like Peng Duhai were traveling up and down the country. They weren't stuck in Beijing where everything seemed okay. But this was his mistake along with a bunch of other people. This conference gave Mao the insight of knowing who would question his rule and policies. Where did he get such an idea? Well, in Chinese history there was an Emperor (I forgot the name) who did the exact same thing. He told his subjects to criticize him, those who did were killed and the others were left untouched. It was a clear warning sign of don't question my authority.
Obviously, he couldn't attack his rivals directly. This is where the destruction of the "Four Old Things" came to play. Its real purpose was to galvanize the Red Guards under his control to kill off his opponents. Confucious philosophy couldn't be destroyed since it was ingrained into Chinese society. I know people whose family hid there family ancestry, heirlooms and books from the Red Guard. Ultimately, Mao's arrogance led to the death of millions of people.