No, I don't think they are ignoring laws and I don't share your sensitivities. Of course, that has something to do with my decision to live in the US rather than Europe, but OTOH I make a frequent habit of saying that the US could be more like the EU in some ways, not least having a constitutional right to privacy. But although I am an enthusiastic privacy advocate, the fact is that if you're broadcasting a wifi AP then anyone going past with a wifi device can observe the fact. Choosing to collect and collate that information is no different from a glazier travelling through a neighborhood estimating the size of the window market.