Catholic social teaching, which this encyclical is grounded on, has it's roots in Rerum novarum (1891) by Leo XIII (the Pope's namesake) and it dealt with the changing conditions of people due to the industrial revolution. We are potentially in the midst of another revolution (I suspect it will be less significant the the IR), so it is prudent of the church to develop a house view.
The analogy would be like if, since the world cup of soccer is going on, FIFA had a meeting and decided every goal was worth 3 points instead of 1 point. Some people might accept that this is "true soccer" and some "legitimate change to the game". Others would denounce the organization and set up their own leagues to preserve "traditional soccer", and declare the FIFA leadership has no "true authority", and that the meeting deciding on 3 goals has no "binding authority" on "true soccer fans". Something like that has happened.
Section 20 of the new "encyclical" reads:
> The Second Vatican Council expressed this principle with particular precision in the Pastoral Constitution Gaudium et Spes, whose sixtieth anniversary we remembered and celebrated with gratitude on 7 December 2025: “If by the autonomy of earthly affairs is meant that created things and societies themselves enjoy their own laws and values… then the demand for autonomy is perfectly in order.” [10]
I don't believe this is the former Catholic teaching on "autonomy"; man is not "autonomous" but subject to God's laws. Autonomy would be a "license to sin": you could set your own "law" that it is ok to do this or that thing contrary to Catholic teaching. This is therefore the wrong understanding of "autonomy", and they are ambiguous about what they mean by "true autonomy" (which would be a "freedom within limits"; much like in Genesis, Adam and Eve had total liberty to eat from whatever tree, except for that of the tree which yielded "forbidden fruit").
I believe the document contains more errors like this, continuing this heretical movement of modernism.
"enjoy their own laws and values" is affirming that the natural world has an objective structure that can be studied on its own terms. Denying that autonomy is occasionalism, which is a heretical view that created things have no real power or nature of their own.
Genisis supports the statement about autonomy. Adam is given the task to subdue the earth, name the animals. To name them means to understand their specific natures. God did not dictate the names, he left that to Adam's human intellect. That's exactly what Gaudium et Spec refers to. Humans utilize their reason to discover the laws of creation and organize human society. We have genuine liberty within the overreaching metaphysical boundries.