It's fun😅

So, "Primarily" depends on what aspect you're defining.

The laws of gravity and matter govern the formation and some behavior of black holes, except objects with near Schwarzschild radius, we all know that.

but the creation of antimatter inside a black hole is a quantum mechanical phenomenon that cannot be explained solely by the laws of classical physics. That is the whole context here. If you read the first note.

QM governs the production of virtual particle-antiparticle pairs near the event horizon, which leads to the formation of Hawking radiation and the eventual evaporation of black holes.

Last any object collapsing near Schwarzschild radius is primarily governed by QM, that is one of main characteristics of black hole. Isn't it.

Am I missing something here😂, correct me a if I'm wrong