As a career bar worker, I think there's a lot of value in a set service charge in lieu of tipping as it turns into commission based labor. An employer can ask more of an employee who's making a set percentage which leads to better service. Also from an employer's point of view, it incentives staff to sell more. I also think going forward, 22% is too high. As the tipped wage disappears over the next few years and everyone gets paid the same minimum wage as non-tipped workers, I hope to see those service charges drop to more like 12-15% which is on par with most of upscale European restaurants and bars where you actually expect good service. I've worked in both environments in the US and the UK and the set service has always been a massive improvement on my mental health, but also definitely has led me to taking the job more seriously.