If the news author's exact quote is correct, then Gavin did use the word "dangerous" to describe Bitcoin. If Gavin didn't mean this, then he should learn to choose his words more carefully.
Jornalists like to create drama. I think Gavin was referring to bitcoin being "dangerous" for ordinary people who are not comfortable with computers. We know how easy it is for new users to loose coins to hackers and scams.
There are still people who have never used a computer in their lives. I have had to walk people through opening an email account. These are the types of people he was probably referring to. The journalists probably needed to fill some space due tio lack of news, so came up with a sensationalist misleading headline. All Gavin appears to be saying is if you are not computer literate enough to know what a firewall is then don't use bitcoin. He could have added that the same type of people would be well advised to avoid using credit cards, online banking and anything related to finance until they have learned about basic computer security.
How do you advise people store their coins then, if offline isn't necessary? 
