Thats not really true either. There is a lot to unpack to understand court cases. Just the hearsay rule and its exception would fill a book. Jurisdiction, double jeopardy, means rea, “reasonable man”, Brady disclosure, fruit of poisonous tree, presumption of regularity, habeas corpus, SLAP, reasonable doubt, writ of mandamus, motion to dismiss, motion to supress, motion for change of venue, motion in limine, amicus curiae, consideration. Just to unpack the latin terms makes your head spin, and then you will be caught out by some term with some seamingly easy to understand common meaning used in surprising ways.

One can almost say it is a whole profession to understand what is going on in court. We could call them lawyers or something if we want to be fancy about it. And then turns out even those specialist further specialise in narrower areas.