I agree, and this attitude is one of the things that's holding progress in crypto back.
Should random software engineers experimenting with crypto claim that they've created a software package worthy of being used by dissidents and whistleblowers?
Absolutely not!
But should we be discouraging random software engineers from experimenting with crypto, and starting open source projects that may gain steam...and eventually, after years of use and audits, gain the standing and reputation to be used by dissidents and whistleblowers?
Again, absolutely not.
Not when it comes to cryptography and HN. Moxie, Collin, and tptacek are the only 3 people that can say anything that isn't mainstream pop-crypto. Anyone that dares to disagree with them is clearly wrong and must be punished with downvotes.