The whole thread is about permanently storing every single conversation forever vs conversations that get deleted shortly after. If the latter is chosen, the blast radius is significantly smaller.
The blast radius of a single person conversations (shoulder surfing) which doesn't make any sense because if you are the kind of person targeted for their conversations you are going to take anyway other countermeasures in any case (in addition to probably disappearing messages).
But for normal people, the biggest risk is companies using their chats to train models / dispatch ads etc to which the only solution is E2EE.
But for normal people, the biggest risk is companies using their chats to train models / dispatch ads etc to which the only solution is E2EE.