That means my choice is, "use an encrypted standard that's banned in China", or "use an unencrypted standard that's insecure everywhere". If China isn't going

That means my choice is, "use an encrypted standard that's banned in China", or "use an unencrypted standard that's insecure everywhere". If China isn't going to approve an encrypted standard, then that sounds like a pretty strong argument that standards processes like RCS that have to play nicely with the Chinese government are the wrong way to build a messaging protocol. The preferable way to do this is probably to support a strongly encrypted protocol, and then build a bridge or a fallback for Chinese messaging since they won't adopt the standard. But then why not just use SMS as the fallback?