I didn't expect to see a topic about Mao here, but I want to tell you that some of Mao's actions, while seemingly problematic on the surface, actually paved the way for reform.
Chiang Kai-shek was a complete traitor. Much of the history of China after the late Qing Dynasty that you've encountered abroad has been distorted.
The reason is simple: China's ideal was communism, a massive threat to all capitalist countries, making it virtually impossible for the West to present an objective account of that period.
Mao was a pure nationalist. He promoted the Great Proletarian Cultural Revolution to prevent the Communist Party from falling into bureaucratization like the Soviet Union. With Mao's prestige, he wouldn't have had to do anything to be revered as a spiritual leader for centuries. Therefore, any YouTube comment that Mao launched the Cultural Revolution to gain power can be interpreted as a complete lack of knowledge of Chinese revolutionary history.