Scraping social media is something that China is very notorious for doing. They are 100% positively scraping all major social networks around the world.

They do this to collect information of foreign policy interest to them, to silence political dissidents abroad, etc.

For example: https://www.washingtonpost.com/national-security/china-harve...

And: https://www.propublica.org/article/even-on-us-campuses-china...