A thought just occurred to me.
Rocketdan wanted to kidnap Pikachu for a long time. They thought Pikachu must be awesome, or something.
But a lot of times Pikachu actually wins by breaking the rules.
Maybe the Jianglongdui could actually be trying to pull a massive mindfuck on Wit by claiming they were an objectivist faction and they were taking over the local monster league to enforce the rules/stop subjective reinterpretations of them, or maybe even just use that as a justification to destroy all the monsters/steal them for Artifex purposes.