A lot of the bike routes are mapped using car data. If you are biking on a one way street and have to turn around, maps will route you around the block (uphill) like a car, even if there’s a sidewalk you coukd bike or walk down instead.
It’s not super great for biking data, but it works. It tends to miss protected bike lanes, though.
The Phillipines needs to put down a few sea mines with Phillipine flags on top. Nobody would be stupid enough to run those over.