the Chinese state is censoring and fencing off some of the content there as a result. Source?

tiktok has(d) developed into a hivemind where tens of millions of people (or more?) can be a part of a discussion. This made it easy for trends to spread rapidly, such as deciding where to migrate with the impending tiktok ban. From my own experience on tiktok, the last few weeks there was much discussion of where to go, and it appears the hivemind settled on rednote.

What makes you say that? From my recent experiences with short form media I’d say there are plenty of bright people involved. There’s tons of actual good STEM/Maker/DIY/Educational/History content and the medium lends itself well to quick community building