I’ve also spent time in Europe using the public transportation you’re using to set the bar and Seattle and Washington DC are on par. I’m sure (hope) that some other US cities are there too that I haven’t visited. Both of those cities have stops or stations throughout the whole city and suburbs. City stops are usually around a 5 minute walk to anything and the suburbs were 15 min walk at worse. Connecting routes to get across town easily. Routes were frequent in busy areas during the day. I didn’t see anything offered in Europe that isn’t also available in these US cities with usable public transportation