What are they doing to keep it out of the rest of their long term care facilities? Note that they have over a million people over sixty. And if you redo their numbers assuming the CFR is roughly known in the different age brackets, things could get much much worse. (That is, the CFR in WA is in very low numbers holistically. For the sixty plus? It is over 15%!!)
So, unless they have something protecting them, just reopening slowly didn't really have a mechanism to protect them.
Now, they could go for herd immunity in care workers. Rotate in those with antibodies, and you are simulations how we protect the elderly from the flu.
But just slowly reopening? What is the mechanism that is expecting a change?