[jolic]

I'm saying that both the claim that "WhatsApp is effective" and that "it is effective against mass surveillance" might be untrue even if it is effective at E2E encryption.

You can argue that WhatsApp itself de facto doesn't effectively protect (against mass surveillance) because it only works with instant messages and a lot of data isn't instant messages. You can argue that there is still mass surveillance of metadata. And that governments could enact secret laws to force vendors to engage directly in mass surveillance of their customers through the OS (less likely in the US, more so in China, especially as Google isn't present).

Sure, it's a nitpick. It's implied that it's effective because it's a good way to use E2E. But it not necessarily explored in the article whether it effectively protects people. I'm sure someone thinks that PGP was effective against mass surveillance too. So it becomes and issue over what you think is worth protecting.