Your example, while potentially leading to a lower salary, is not actually an argument against public salary information, unless you assume the goal is universa

Your example, while potentially leading to a lower salary, is not actually an argument against public salary information, unless you assume the goal is universally higher salaries... Which, in your example, you explicitly state is not the goal of the worker... The prior is, in my opinion, generally the safer assumed goal. Regardless, yes, more information yields the possibility of incorrect analysis, but I don't think that it's obvious that the information in this instance, the salaries of one's peers, would be of such complexity that knowing it would result in frequent misinterpretation to the detriment of the worker. In fact, given the stated goals of the worker in your example, even they use such information to their own (personal) moral, if not their financial, benefit.