Pier

osm.org/way/163789046
This seems to be a service road that allows vehicles.

the official map shows more footways

1. The piers here are currently not shaped like this. 2. There is a small floating pier to the south, connected by stairs.

angle lake cyclery has moved: this is now "seatac international mall"

osm.org/way/441698469 Does the 'south plaza' really exist?

osm.org/way/442214804 Really there is no such thing as 'the Angle Lake station building'.

osm.org/way/121820692 and osm.org/way/263290585 appear to be duplicates.

osm.org/way/626606028 does not look like this in new imagery.

There is a strange lump in the road path here.