You keep drawing parallels between Zoom's end-to-end encryption and iMessage's, when there really is little to compare. iMessage is end-to-end encrypted because intermediaries do not have access to decryption keys; your "attack" relies on a malicious actor tampering with key distribution using a technique that requires even more setup than is described in the old article you've linked. On the other hand, Zoom has been actually decrypting traffic as a key part of their service and yet called it end-to-end.