Their big message was that fingerprinting does a worse job of filtering out dangerous drivers than Uber or Lyft's internally-used background checks.

What background checks? [1] [2]

[1] http://calgaryherald.com/news/local-news/nenshi-not-very-goo...

[2] http://observer.com/2016/05/uber-driver-charged-with-attempt...

In your first link the mayor later said “I am not aware of anyone convicted of a sexual offence clearing the background check used by Uber in Calgary. Watching the video, I realize that I did not explain myself clearly at all. I apologize for any confusion that I have caused.”