I understand that angle, but the rule about catching and using whatever you first encounter always sounds tangential to the main rule of permadeath, and many people talk about Nuzlockes as something they do as a challenge run, like "oh, I only play Nuzlocke challenges because the games are too easy otherwise." And when I hear people bring up "flaws" in a particular game that only exist because of Nuzlocking them, as if the games should be designed around you randomly discarding and replacing team members late in the game, then I have to question your priorities.