Search has become a mass surveillance tool for the government. That is the article's point. If you think it's a nothingburger, you aren't aware of how often a person's Google searches are used to establish criminal intent in criminal trials. Also, they can be used to bolster probable cause for search warrants and arrests.

Also, check out geofence warrants. Essentially, the government can ask google for the IP's of people who searched for particular terms within a geographic area.

Of course, don't commit crimes but this behavior by the government raises the spectre of wrong search, wrong place, wrong time. This is one of the article's points, it causes people to self-censor and change their searches out of fear of their curiosity being misconstrued as criminal intent.