4.20. Is there such a thing as “conservative” and “liberal” Catholics?

No. These are modernist labels foreign to the nature of Catholicism. One is either Catholic or not.

Catholic doctrine is objective, unchanging truth. To say one is a “conservative Catholic” implies that there are different legitimate versions of Catholicism, which is false. Those who resist modernist innovations are simply Catholics, not a faction or party within the Church.

The terms "liberal Catholic" or "conservative Catholic" come from politics, not theology — and only obscure the reality: Vatican II changed the religion, and traditional Catholics reject that change.