We will have to see.Changing the material on the dome part of the switch might have been an important fix, since it could have solved a fundamental part of the problem with the old mechanism. And, to be clear, there really is no evidence (anecdotal or otherwise) that the 2019 Butterfly keyboard is less reliable than a standard scissor mechanism keyboard. In other words, there is no guarantee that changing the mechanism will result in more reliable keyboard. So, why do it?