You might be misunderstanding E2EE. In double ratchet system, not even the operator or host can decrypt DMs. Fully homomorphic encryption is also possible to o

You might be misunderstanding E2EE. In double ratchet system, not even the operator or host can decrypt DMs. Fully homomorphic encryption is also possible to operate _on encrypted data_ albeit computationally impractical still for a couple years.