Agnosticatism

Mary Flannery recently proclaimed that "I will expose Microblocks to not only Catism and Dogism, but birdism, ratism, insectism, and fishism. It will be up to her to choose her own path when she is at an age where she can reason. Our household is agnosticat."

This prompts the obvious question: is Catism an exclusionary, sectarian philosophy?