I've heard these as talking points, often in a political context, but the opposite has been true in my experience. The places that have removed tips seem to be much happier on the whole.
I think as well something that would be concerning regarding the quality of service of the places that you're talking about that the quality of service depends upon how much money is being given, and less things that oftentimes help people perform on the job better (non-toxic environment, healthy egoless leadership, good colleagues, good company ethos and ethics, etc).
Obviously pay is important, it's a job after all, but people can't magic the willpower to perform well for money out of nowhere. I think that's up to the company to protect and foster that kind of a productive workplace where people can achieve their potential.