Why Murlocs are not good in constructed

How does that work? No part of my logic was based on which class received the murloc tribe first. My position is that a tribe as varied and present in multiple classes as Murlocs shouldn’t be focused in a class like Shaman when it already has its identity cemented in two other tribes (one of which is exclusive to Shaman). If any class deserves to have a Murloc theme it should be one of the ones without a tribal focus rather than one that has two.