No, there's been plenty of worse disasters. The San Francisco 1906 earthquake, the Galveston hurricane, etc. The cumulative earthquake risk around Seattle is about 1/2 of California. I'm not a seismologist, but I was a geophysicist who knew many seismologists working in the NW. They uniformly thought it was sensationalist.

I'm not saying this isn't a major threat that must be prepared for, but it's not an apocalyptic or existential threat like this article makes it out to be.