Fascinating stuff so I think its on-topic ;-)
"The Court concludes that this exception covers unsecured wi-fi communications, so that it is entirely lawful to snoop in on someone else's private communications over an unsecured wireless network:"
I think its a bit emotive to suggest that someone is "snooping" on "private" communications if those communications are broadcast in the clear. If someone has a flawed perception of their security then legislation that reinforces that flawed perception is doing nobody any favours.