Even more afraid than those of us that keep our networks open.
If you 'close' your network, and somebody does something nasty over it, you have to prove it wasn't you, while if you leave your network open it is obvious that it could have been anyone.
Closing WiFi networks is some of the worst kind of security through obscurity, and from the legal point of view of defending yourself from accusations based on what others do over your network, leaving it open is by far the best option.
It is also much better from a practical point of view, for example, now I hate traveling to Germany because of dumb laws like this and how sheepeshly Germans follow them, the whole country has become a WiFi wasteland, while in Poland you can find open WiFi networks basically anywhere.
WEP connections can be breached in minutes, WPA connections are also easy to break if you use a dictionary word.
Everyone who is even on a "secure" network would have a right to be afraid of laws like this.