This article is missing a real issue here by trying to make the story all about the employers. Many workers like the tip system because it creates inequality among the restaurant workers. Good servers can earn a lot more money than what they’d earn if every server were paid the same, fair wage.
My mom used to work at a furniture store as a floor sales associate on commission. She would regularly clear $120,000/year (this was 15 years ago, so like $180,000 today). A generous wage for the job at the time probably would’ve been $50,000 or so. She would’ve fought such a policy tooth and nail.