Show me a laptop that doesn't have wireless networking fitted and enabled as standard these days.
How many people know even how to turn it off (the networking) ?
If a laptop has an internal card it is disabled by default until you hit the Fn and F2 key (on most laptops) at the same time. They do that so you don't get hacked. It also kills the battery.
But this is a mute arguement as there would be nobody with their laptop on at this point of decent.