I'm not going to run interference against all the comments you're writing on this thread, because I don't think Signal needs the help and it would make the thread ultra-tedious. But during the brief window where people were taking Wire seriously as a Signal alternative, I'd occasionally write a comment or tweet like:

Were you aware that Wire keeps a high-fidelity plaintext database of exactly who talks to who on their platform?

And people were reliably startled. But all that was happening was that ordinary users have no mental model for how a secure messenger is designed, and hadn't thought through how serverside contact lists that magically work no matter what device you enroll in the system were actually designed.

So here I'll just say: the stuff you're saying about Signal is pretty banal and uninteresting. The SGX+Enclave stuff is Signal's answer to something every other mainstream messenger does even worse than that. By all means, flunk them on their purity test!

This comes as news to me, and rather disappointing news at that. Do you have a source I can read further?