This article is from 2013. While things didn't change a lot (this years TouchID was broken as well IIRC, though I've heard it got a little better), it's hardly news.
Also, I don't think even Apple advertises its fingerprint scanner as a replacement of passwords. It is a replacement of 4-digit PINs, and for that it is far more secure. While members of CCC have the knowledge of lifting a print, most people do not have this knowledge or tools. And if you notice your phone is stolen, you can always log in to icloud.com (with your password, you cannot use TouchID there) and lock down/reset your phone immediately.
Also, I don't think even Apple advertises its fingerprint scanner as a replacement of passwords. It is a replacement of 4-digit PINs, and for that it is far more secure. While members of CCC have the knowledge of lifting a print, most people do not have this knowledge or tools. And if you notice your phone is stolen, you can always log in to icloud.com (with your password, you cannot use TouchID there) and lock down/reset your phone immediately.