I assumed they were a fresh startup around 2015 or so when they started getting a lot of media traction.
Maybe I was just out of the loop, but that's really surprising to me.
https://trends.google.com/trends/explore?date=all&geo=US&q=z...
Even if the company practises seem to have had a knock-on effect. .. if the article is accurate of course.
https://trends.google.com/trends/explore?date=all&geo=US&q=z...