In a statement to the publication, Signal president Meredith Whittaker says, “Our privacy standards are extremely high and not only will we not lower them, we want to keep raising them. Currently, working with Facebook Messenger, iMessage, WhatsApp, or even a Matrix service would mean a deterioration of our data protection standards.”

Ugh, okay Meredith, let's pretend it's impossible to handle this with user experience that makes the user acknowledge their conversation with a WhatsApp user is not secure. Meanwhile if the only viable way for this conversion to occur is to have WhatsApp on both ends, the situation less secure. So according to Meredith, the choice is between less overall security or not having conversations with people who don't use Signal. That could makes sense for her salary but it surely is a net negative for Signal users some of which will have to install WhatsApp since they won't be able to afford not to have those conversations.