Vancouver islander here - tbh, Vancouver Island is mostly okay too. If you look at the map, you'll see that a huge peninsula shelters the most populous area (Victoria) from tsunami. Most of the smaller towns are on the inside passage. The only places that are in real danger are Tofino, Ucluelet, Port Renfrew, and several small native settlements. It's a shame because those are some of my favorite places on earth, but 90% of Vancouver Island doesn't live there.
(I did the research on this last year after I had a nightmare about tsunamis.)