Seattle.

I assume you're referring to the newish $15 minimum wage. A search for "Seattle restaurants no tipping" gets me a number of articles discussing the subject. From reading them it sounds like Seattle is now a mix of restaurants that discourage tips, restaurants that discourage tips but added a service charge, and restaurants that continue to accept tips. There also seem to be places that have raised prices along with these changes in tipping. I'd note that the places that raised prices seemed to raise them to also cover other increased costs besides just labor. It doesn't seem like Seattle has uniformly embrace no tipping in bars and restaurants.

I lived in Seattle through this grand experiment and know several restauranteurs personally.

The no tipping experiment became trendy several years back, with many restauranteurs converting their restaurants including at many of the restaurants I frequent. It was actually quite jarring because so many restaurants made the transition at around the same time. As a consumer, I simply adapted.

However it was quickly reversed because it produced poor results per the telling of both the restauranteurs and employees. At this point, it is experimentally "settled science" in Seattle; you'd be hard-pressed to convince people to try it again given how poorly it went last time.

Every single place in Seattle with a square terminal will turn that thing around in your face and ask for $2 or %20, whichever is higher. Even if the place is takeout only... hell, even all kinds of places that aren't traditionally tipped.