Yeah, the report shows a German woman that they were able to identify. She used to have WOT installed, but they also show her using Adblock Plus and Ghostery - neither of which I fully trust. I wouldn't be surprised if many more addons do something similar. I'm glad uBlock Origin is open source and so far I haven't heard anything bad of Disconnect (which I use to block trackers), but who knows...
Ghostery definitely sells your data, I can't remember if it's under the settings or during install but they do tell the user that they do this. I believe Adblock Plus and uBlock (the old, non-open source one) do this too. Problem is, some browsers do this too; I think Chrome has some DNS protection setting which intercepts your DNS requests and sends them on to Google... though to be fair many people use Google's DNS already hah.