Wild baseless speculation;
I think that fundamentalism will define the 21st century. It will eclipse Post-modernism as the answer to modernism because people want definite answers and they don’t care if they are true or not. Plus fundamentalism is easy to understand so children and under educated adults can understand it; a very important consideration if one wants to conquer the world.
What is it?
Most simply understood fundamentalism is a reaction. It is a reaction to the secularization of culture which forces believers to intensify their piety. At its root it is driven by the fear of annihilation.
Why is it bad?
This is important so pay attention; Because it focuses on acts of piety over and above virtue. Believe me this is a bad thing. From Isaiah to Socrates to Benedict 16 there is agreement on the badness of this.
Is there Fundamentalism in the Catholic Church?
You’re darn tootin’. Every one of you Baltimore Catechism, V2 ruined the church, the Bishops are wrong, Latin Mass types are teetering on the edge of fundamentalism.
How can I avoid it?
Develop virtue over piety.