You've got to realize this is Seattle and the definition of liberal has to be somewhat relative. It is not a liberal church compared to 90% of its neighbors (both churches and people).
In more absolute terms, almost all churches in Seattle are liberal from my perspective. For example, there are only three traditional Catholic parishes in the greater Seattle area (two diocese and one independent). Possibly an eastern Catholic or two as well. The others are liberal modernist parishes.
Thanks for your explanation! It is easy to see why Democrats get elected in the state of Washington.