Re: ''deranged sys admins''
Just to pick a big nit.
There's no reason you can't be the most intelligent person on the planet AND deranged -they're not mutually exclusive
The word deranged simply implies mad/insane - there's no implication of stupidity or foolishness, just of less than sane beliefs/thought structures.
Personally, I think deranged is a fair word for those that follow ISIS