The big difference between Twitter and all those other apps, as someone who has used both KakaoTalk and Line, is that they didn’t start out as social media posting apps - they were just chat messaging apps for talking to your friends, not the world. Then they added payment for things like buying stamps or sending friends money. From there, once they had established payment methods and users that trusted them, they started slowly adding services people thought were useful. The ecosystems built up organically over time. No one planned for them to be everything apps or tried to force it on the apps and users. They became those because they adapted to how people were using the internet on their phones.

That's not an "idea", he's literally just trying to copy authoritarian states where the people are stuck with the "influential 'everything' app" power concentrating garbage, like WeChat, so he can have that power too.

How exactly do you resolve the cesspit problem without censorship? It seems pretty much mandatory to engage in some level of censorship to avoid it. The only way to remove the most toxic people is to restrict their toxic behavior.