I like the idea of someone tearing down Gmail's confidential email feature, but this article isn't terribly thoughtful. It mostly just repeats the same 2 or 3 points over and over (confidential mode isn't, end-to-end encryption is important, our product does end-to-end encryption). It feels like it was rushed out to get ahead of others who might write the same thing, rather than trying to educate people about what these terms mean to them and why they should be important.