Reading the RFID device is not a danger..?
If the data stored in the tag is encrypted then there is nothing that can be done with it unless you have they key to decode the information. As they said, it was just a meaningless stunt.
For example, you access online banks using https which is just normal http sent in an encrypted stream. If you worry about someone taking encrypted data from an RFID tag then you will also worry about someone listening to all your https communcations on the internet and decoding that.
And what is the info going to tell them anyway if they did decrypt it, your passport details? How often do you have to give a photocopy of your passport to prove your identity (or a company takes a copy) - what makes you think that this info is not picked out of gargabe bins?
It is easy to get your personal data already. Unless you shred all your letters (asuming you get them all and none are "intercepted") and you don't use the phone and don't send emails without PGP, never let go of your credit cards and never let anyone see them, then you are already a potential victim of identity theft.
I dispair of people that are worried about converting paper based systems (easy to steal. copy, forge and change ready for illegal use) to electronic based systems (harder to use for fraud as exceptions can be detected easily).
The sooner we all get a chip embedded in our body that is encoded with our retinal signature, the sooner we can all prove who we are immediately. I prefer that solution to having someone take a bit of paper out of my letterbox, a bit of info off the internet, and then go open a loan in my name.
If you like your paper based world then stick with your steam engines. I expect we got the same worries when we started to put photos on ID papers: "Imagine if someone should steal my ID papers, they could put on a disguise and thus in pretence commit a devious act, apparently in my name...!"