Yes, a major contributor to the Air France Airbus 330 that crashed into the Atlantic in 2009, i believe.
Utter rubbish! Thousands of flights are made every day with non-linked FBW side-stick controlled Airbus aircraft - it is only the dimwits who don't bother to learn about the system, or to understand the discipline of take-over of control methodology, who have problems.
A bad workman, or perhaps 'ouvrier', blames his tools.