I think he is saying that it works for people who are either "at work" or "at home". Once you want to have your work notifactions during your leisure time, it gets complicated.
Ordinary users do not want to disable JavaScript. Hell, they don't even know what it is. Advanced users like you can still use NoScript or about:config.
The falsity of a given (prominent!) data point just puts the care and diligence of the author into question and plants doubt in the reader's mind. It doesn't imply the validity of an opposing narrative.