> why they are using a Shanghai-based startup
Maybe, because that startup does a good job for an reasonable cost.
> Clubhouse is a honey pot for CCP
No it's a fancy life style app which doesn't care about censorship resistance at all. As far as I know
you can be pretty sure that any service operating in China will have backdoors or similar of some form, through potentially only for their Chinese users.
So as long as you don't use a service which explicitly cares about censorship and privacy which also operates in China you shouldn't trust them with any sensitive information at all especially if part of the "conversation" is "in china". I mean I would be seriously surprised if the key-server of e.g. zoom doesn't leak encryption keys for "(partial) in china" conversations to the government.
And coming back to clubhouse while they might seem to be privacy orientated on the first sight they are, as far as I can tell not. They just use "exclusivity" as a way to sell there product and mistaking this "exclusivity" with privacy would be a big mistake.
I mean some of the most common usages of club house are basically a fancy form of a pod-cast "just more exclusive".
> Or prove me wrong
Your argument is as much based on biased assumptions as is mine. So this discussion is pretty far away from any prove in any direction tbh.