Although the author is correct in pointing out there is no subduction in southern CA, what he fails to mention that the San Andreas Fault is a giant Transition (or more commonly, Strike-Slip) Fault that is tied into the subduction zone . . . cause for alarm in the event of a 9+ seismic event at Cascadia? I think so.
Sgt. Frank Drebin (Leslie Nielsen) to Capt. Ed Hocken (George Kennedy) “I dunno Ed, everything I see reminds me of her...”