Why does are there so many people on Social media that are sympathetic to China and hostile to the West?

 Several reasons:

• The CCP has a large army of paid bots/”info peddlers” who whitewash its activities on social media, deliberately conflate opposition to the CCP with anti-Chinese Racism and spread its propaganda;
• Reflexive Anti-Americanism - all too common these days;
• Historical Ignorance…Most people are barely aware of the horrors of the Great Leap Forward or the Cultural Revolution but have been inundated with all the negatives in American/Western history and therefore have no perspective;
• Self Flagellation and the culture of guilt.