I always like to hear of wages going up, but restaurant prices have gone up a huge amount in recent years, and restaurants are still pretty full. We seem to be in an environment where people are willing to pay more for better food, and people like local restaurants more than in past the past, so I think the wage increases have been more easily absorbed by the industry, merely due to market conditions.
Furthermore, Joe's Crab shack raised their wages ABOVE minimum wage when they didn't have to, so they are not a good example of raising minimum wage. They are an example of a restaurant just raising wages on their own based on market conditions and their own cash flow.
The rest of the data in the article is sort of fuzzy. They just say things like "We could not find any consistent effect." I want numbers, thank you.
This really just sounds like the government taking credit for raising minimum wages after they were already going up.