While I don’t agree with the sentiment that it’s irresponsible to publish these maps, I don’t think you should underestimate how lazy the average person is, including terrorists. It often baffles me how utterly ineffective most terrorists are (which I guess , among other things, comes down to “bad”/lazy planning), only managing to kill maybe a handful of people, if even that.

Most people wouldn’t be very interested in being so nerdy as to map out the London Underground. Why would most terrorists be any different?