The counterparty should be naive or stupid to think that whatever they send has no chance to be recorded forever. They should always assume otherwise. The only

The counterparty should be naive or stupid to think that whatever they send has no chance to be recorded forever. They should always assume otherwise. The only interesting use case of disappearing messages is that messages one receives will disappear securely, even if they forget about receiving such messages, or have no access to the device at the time.