Author sounds a tab paranoid.
I live on the Oregon Coast and have been following the Cascadia Fault earth quake information closely for years.
He’s under playing the details. Check out the video in post #6
From studies of the Indonesian quake and the big Japanese quake scientists keep upping the damage predictions from what they originally thought.
Question: After the past decade, do you trust the government?
His PhD probably concluded “I recommend LOTS more research on Cascadia Subduction.”