Re: You can read my SMSs but you can take my WhatsApps from my cold dead hands
"This perhaps is why we should always roll our own for maximum secrecy."
If by "roll your own" you mean "apply your own encryption and don't rely on that built into applications", then I agree.
If you mean "invent your own encryption", then I don't agree at all. That would be foolish. Strong crypto is really, really hard to get right (and very, very hard to tell if you've gotten it right or not). Unless you're a mathematician with a focus on cryptography, you really are much better off using crypto that's already been vetted.