"In theory, there is no difference between practice and theory. In practice - there is."
The opening post wasn't targeting these know-it-all types... It was mostly theory.
First, there was no protection in the WiFi space and it was used. Under the same premise of 55 years old neighbours.
Then, WEP came along. And it was hailed as best thing after sliced bread until FBI showed how to break it in 5 minutes.
WPA2 was the latest significant development in consumer level routers. It was considered to be almost as good as VPN. Until now...
In practice, if you know what you're doing, this doesn't change much.
Install WPA Enterprise, RADIUS, use good passwords and you'll be OK
BTW, if you believe Schneier, the network must be free; the endpoints should be secured, aka VPN...
What this latest Elcomsoft announcement changes is the perception that WPA2 is "good enough" for sensitive communication...