Yeah, but, like the parent points out, that's not the rationale for having a tipping culture in the first place. It's just a well-intentioned attempt by people who live in a tipping culture to try and make it a bit less crappy for the people who have to suffer getting paid that way.

And/or a craven attempt by employers to further deflect any responsibility for responsibility for paying their employees. I noticed that the Curb app bumped the default tip rate to 25% at some point. I'm guessing that's somehow, directly or indirectly, leading to them or taxi companies getting to keep a larger cut of the fares.