A trade off is what it is. You may have to trust a little bit that things aren't getting censored, and that the proxy won't abuse your IP information.  And in return your client can be simpler, maybe doesn't need to open as many connections, and you get a bit better privacy without really doing privacy right.  That works for some people, which is why I think it's a viable idea.  I'm not working on such a thing because it doesn't really work for me, but I'm not against it.