I mean, the Wikipedia article you linked about information asymmetry characterizes it as a cause of market problems and inefficiencies, including adverse select

I mean, the Wikipedia article you linked about information asymmetry characterizes it as a cause of market problems and inefficiencies, including adverse selection ("The Market for Lemons"). To say that you need information symmetry for the market to work well is just another way of saying the same thing - at least in the kinds of situations described.