I will try to explain it again.
Causality is about answering the "why" questions. We answer with an explanation that begins with the word "because". In other words we explain a "cause".
However causality can take different forms and different philosophers have classified different types of cause in different ways. In the past Einstein used the word "causality" when talking about quantum mechanics to refer to what we now call "determinism". All this creates a lot of confusion.
Some scientists say that science is not about answering why questions. It just says how things happen, not why. Others say that causality is so fundamental to science that it is meaningless to say that causality is not fundamental.
One type of causality that people are particularly attached to is temporal causality. This is the idea that cause precedes effect. Everything that happens is caused by something that happened earlier. This refers to real-world physical events that have a place and time. Temporal causality cannot tell us about general facts of existence like why the electron is charged because this is not something that happens at a particular place and time. Answering those types of questions requires a different type of causality that we call "ontological causality" Ontological causes do not proceed ontological effects in time, they just explain why things are the way they are. For example I could day that momentum is conserved because of transaltional symmetry and Noether's theorem.
A conservative view would be that temporal causality is fundamental but ontological causality is just reductionism and is not what science is about. I take the opposite view.
Temproal causality is not fundamental. People might have been excused for thinking so in the 19th century but now we know that the fundamental laws of physics are time symmetric so they can not distinguish cause from effect. The arrow of time emerges as a macroscopic effect from thermodynamics which tells us that entropy always increases in one time direction. The direction depends on boundary conditions so it is a feature of the solution of fundamental laws, not the laws themselves. We can try to reduce the principle of temporal causality to the statement that operators commute if they are not inside each other light-cone. But even the geometry of lightcones is a dynamic feature of gravity, not a fundamental feature of physics. It depends on the spacetime metric which is the gravitational field. The causal structure of spacetime is part of the solution of the equations of gravity, not something that is built-in.
This is why we say that temporal causality is emergent. This enmergence is not something that happens in time. You cant say that at some time in the past there was no temporal causality and then something happened and it emerged. That would be a contradiction in terms as you pointed out. Emergence of temporal causality is ontological, not temporal. We have to explain why temporal causality is part of our everyday experience when it is not part of the fundamental laws. When we do that we use ontological causality, not temporal causality so there is no contradiction.