Is it time to worry when security professionals consider you too paranoid?
I consider myself quite security-aware (or paranoid, as you like), too, but some of Mark Burnett's measures are really quite extreme. For example:
I require my kids to use at least 14 character passwords on our home network and I'm considering issuing them smart cards. [...] I don't just throw out shredded documents; I spread the shredded bits into my garden to use as mulch.
However, I really agree with him on this issue: "There's no need to analyze the threat of every situation. Just practice strong security always and you should be okay". I couldn't have said this any better.