Hunter X Hunter often takes interesting angles because such explanations are rarely done to enemies.
-Explaining their ability is often done between allies to optimize teamwork or as a sign of trust.
-There is a nen user in Greed Island who does this as a requirement for his ability and as a result, said ability has a massive boost in power.
-Hizoka's memetic explanation of "bungee gum has the properties of rubber and gum".......makes his ability sound ridiculous until he uses it for many creative and deadly tricks.