Used to be? No way. SEA is one of the worst!! I take a family vacation there every summer and we often wait 45 minutes. Stop at the RCC, have a coffee, take the train, bags still not there!

Then in August they came out in about 20 minutes. We were floored.

OK, so my data points are only once / year, but for more than a decade. Am through there often, never check when travelling solo.