That's not a conclusion, it's a claim by a human in a discussion. It is certainly not the case that you need a double-blind study before you can have any opinion on a subject (and, I'd argue, a complete misunderstanding of the scientific method).
It's certainly a more defensible claim than the completely irrelevant ad hominem you made about Keybase being "docile in the face of evil". Why was the commenter's employer relevant to the discussion?
You not being convinced is no excuse for derailing the discussion.
Behavior like this makes people think twice about even trying to engage with the crypto-loving, privacy conscious, free-speech market segment, because even trying to do anything in that direction is met with abuse.
That's certainly a plausible hypothesis, but without evidence, definitions of words like "weak" and a proper wash through the scientific method, I'm not convinced we can make conclusions like that at this point in time.