I think people have this romantic view that China opening up GFW will result in a kind of "Yeltsin visit a supermarket full of stock" event. On the other hand, I argue that it will just unleash massive nationalists and trolls from the inside of the wall. Remember that China internet users are massive and there are more Chinese that understands English than vice versa. If TikTok and Kpop fans trolling Trump's rally is huge, expects nastier trolls and pranks from the Chinese nationalists.
The firewall exists for a reason. If China opens it up the following things will most likely happen:
1. More Western sites will adapt to their new Chinese audiences. This might result in more Chinese using them, which might eventually lead to China's own social media and sites disappearing or being absorbed by the big Western monopolies.
I thought that SinoDefence users were more aware about hybrid warfare and strategic thinking. Giving more power and a Chinese audience to Western social media will empower the US, the West, and their agendas and narratives. You are naive (at best) if you think the US won't use this opportunity to try PSYOPs on their newly acquired Chinese audience. Hong Kong, Taiwan, and the Arab Spring sound familiar to you?
2. I already mentioned in the previous point, PSYOPs are assured. China can have all the trolls it wants, but the US is organised and has vast experience with subverting other states. Hell, look at Vietnam: gassed, raped and murdered by the US, yet Vietnamese are US/Western/white worshippers. The US is a dangerous force when it comes to societal manipulation.
3. China and Chinese would end up losing their own internet culture. Have you checked the memes in Western countries? We mostly have the same, and they all come from the same place: Amerishit. This is called cultural imperialism and cultural hegemony. The future will be grim for China and the world if we let Anglos/Westerners dominate the cultural hegemony. Every country deserves to become unique and culturally develop independently.
4. Western people and their mindset are different from that of Chinese people. The West is an empire in decay with the US at his head. Westerners are toxic, their culture is toxic, their socialites are toxic, and their ideologies are toxic. Even with things as innocent as memes you can feel the decay of the West: Western memes are defeatist, self-deprecating, nihilistic, etc. When you mix toxic water with clean water; all water ends up becoming toxic. I don't not wish this for China and Chinese people.
By the way, I'm a Westerner and I live in China, I know what I'm talking about.