I think anyone surprised by the move from #TikTok to #RedNote wasn't paying attention. Privacy isn't a major concern for TikTok users. Jokes about "Chinese spies" and "FBI agents" abound.
The assumption is that they're being spied on. Many are willingly trading that for nigh infinite video content served by an algorithm that takes their preferences into account.
Content and Curation are the appeal. Both.
"Make your own feed with no algorithm" is not appealing. It defeats the purpose for many users.
The move to Rednote is as much about sticking it to the US Gov as it is about moving to a similar app