"So you're blaming others for being stronger because you yourself lack power?"
"There are still four Sky Cities left. If anyone is unsatisfied, grab them!"
...
This situation is similar to when Dawn City first emerged. There were also a bunch of IDs protesting under the banner of 'fairness', but at that time, humans had just fought a battle with the Wizard Association, so the overall solidarity among players was still strong. Moreover, Dawn City was the first Sky City, and there were a lot of hopes for the future, so the opposition voices were not prominent at that time and were quickly suppressed by louder voices.