I certainly can't wax as poetic as Justice Wiley. But I can perhaps summarize the points he makes in his concurrence fairly briefly:
(1) Everybody loves the Internet. So while the majority is right that you can't dismiss the complaint here at the pleading stage, it's going to be a pain in the butt for everyone if people get to file suit in California claiming that they need accommodations at work because they allegedly get super sick when exposed to WiFi.
(2) Experts are prostitutes. They'll say anything.
(3) Given (2), trial courts should think a ton about appointing a neutral expert. That'll get the case settled, I bet.
There you have it.