I would counter that it depends on the kind of tires you are running and anyone selling tires in Cascadia that aren’t wet rated should be locked up for reckless endangerment.
Seattle isn’t that bad in wet pavement, unless it hasn’t rained. Which only happens about four to six times a year but that’s still enough that people should pay attention.
Even ultra high performance summer tires can tolerate wet. You have to deliberately choose to run slicks (or bald tires) to get something that can't handle rain.