[stonogo]

I don't disagree but "it's not possible for xxx to be used securely" is a long way from "it's cumbersome and tedious to use xxx securely"

[rendaw]

If using it securely requires you to never ever forget, even once, I'd agree with GP.

[JasonSage]

But "it's not possible for xxx to be used securely" is a better premise if it deflects people who can't do it correctly.

[stonogo]

Lying to people because you think you're smarter than them is bad policy.