> We also agree that Signal is a more secure alternative.
Signal is only a more secure alternative in _some_ threat models. The most obvious counterexample is that, in some contexts, using WhatsApp marks you as a person who owns a smartphone, while using Signal marks you as a dissident. There are other contexts where losing messages while not being actively attacked (not even just due to this design decision; Signal ultimately just does not have as reliable infrastructure as WhatsApp) is more dangerous than WhatsApp's resend behavior.
Signal is only a more secure alternative in _some_ threat models. The most obvious counterexample is that, in some contexts, using WhatsApp marks you as a person who owns a smartphone, while using Signal marks you as a dissident. There are other contexts where losing messages while not being actively attacked (not even just due to this design decision; Signal ultimately just does not have as reliable infrastructure as WhatsApp) is more dangerous than WhatsApp's resend behavior.