[mhoad]

Let me preface this with a disclaimer that I’m not crypto expert so if I am saying something dumb here I would appreciate it that someone pointed it out and hopefully I’ll learn something in the process.

But I don’t get why would any of that have to be true? I don’t understand the technical requirement that would break E2EE here?

Of course you can make interoperable E2EE between platforms.

You will have to use the same open protocols which I think is the actual goal we are going for here. We already have good options in place for exactly that like https://en.m.wikipedia.org/wiki/Signal_Protocol

If that became the new standard for interoperability I would consider it a great outcome.