As someone that grew up in Pittsburgh and lived in the Seattle area for 5 years, Seattle's topography isn't that extreme, the drivers are just awful. My favorite example is this interstate exit: https://www.youtube.com/watch?v=Tij3SRs_5wg&list=PL_ZOHdoqrC...
To be fair, SF is the hilliest city and Seattle is #2 last I checked. But nobody in Seattle complaining about everyone else in Seattle is talking about people sliding into intersections downtown, they’re talking about the number of completely avoidable ditches and accidents in places that are inexcusable.