This changeset has curious effect on bicycle routing, e.g. https://www.openstreetmap.org/directions?engine=fossgis_osrm_bicycle&route=56.924422%2C24.162337%3B56.923581%2C24.164222#map=19/56.923864/24.163230
This is completely unnatural route for a bicycle.

Why do you call bicycle=yes on sidewalks "bogus"? Cyclists are allowed on sidewalks under Latvian traffic law. Yes, they are required to slow down and give way to pedestrians _when necessary_ which can affect max/average speed, but there are not that many sidewalks that are so crowded that it significantly impact cycling.