Isn’t this similar to what DoorDash (a YC company) is doing? https://notipdoordash.com
These sorts of stories confirm my feelings about tipping that I’ve had all along: tipping is just a way to subsidize employers by pitting employees against customers and guilt-tripping the latter.
Follow-up update: Aren't all the gig economy start-ups (Uber/Uber Eats, Lyft, Caviar, Eat24/Yelp, Fiverr etc.) potentially doing the same thing? They are probably exploiting the same loop-hole in whatever set of laws. It might be just a UI update, but I remember seeing a message of the form "our drivers get 100% of their tips" in Uber Eats just yesterday, which is sort of like saying "we are following the law about tips".