@0x00string his server was a shared one, according to the article )
I agree with your comment, and it does not contradict my ironic statement.
From what I keep reading daily on Reddit and elsewhere, I can confidently assume that most of those preaching about FOSS implicit "security" would very unlikely go an extra mile and check on the server.
Moreover, I'd dare to suggest that even if that server was running open sounce software, this alone would not necessary make a difference security-wise.
Thus, the point still stands.