Sure, there is some amount of fault for the system needing more maintenance. But road conditions are often going to be far from perfect, and that crash is certainly not atypical conditions.
Either California can shut down the entire highway for a week until they replace the crash barrier, or Tesla can build their self-driving cars to be able to recognize only moderately faded white lines.
That's my point. A human driver had hit those barriers just ten days prior. If there is a part of the road people are driving into constantly maybe we should look at road design over drivers.