How else do you signal the bus driver to stop? And why is this an issue?
The NYC MTA years ago used these rubber push strips held in an extruded aluminum profile. They were all over the interior next to each window and ran along the edges of the ceiling for standing passengers. They were frequently broken, cut or pulled from their bases by bored school children. This lead to the button circuit being stuck closed preventing more presses from triggering the bell and annunciator lamp at the front of the bus to notify the driver. People would then miss their stops and start yelling or walk to the driver to ask them to stop. The pull cords are old school but insanely easy to fix and maintain.
In Europe we have buttons. The pull cords and push strips seem weirdly over- and underengineered at the same time.
What's wrong with pulling a wire? Works well, easy to maintain.
A button press is something we use.
Hardly the kind of thing I was expecting in SF. Same for BART, looks like something straight out of the 70s. Or those huge concrete slabs cut with saws, used for sidewalks. In Europe they generally use asphalt.
American infrastructure generally lacks... panache, style, IMHO.
The only way to get to the other side of the road was using a vehicle - there were few hired shuttles that were driving people from hotel to work and back, quite insane.
A week before I was in SF and public transport there was decent, but the vehicles were like from 1950s in comparison what I'm used to use in my country, e.g. if I wanted the bus to stop I had to pull a wire (yes, a wire!) to notify the busdriver that he/she should stop on the next bus stop. That's just one of the issues, and the quality of the bus was no where near the current ones we had in Europe.
On the other hand the bus drivers were very friendly and open.