In ground RB, 3D maneuvering is not a crucial part of a player’s skillset.
In Air RB and sim, 3D maneuvering is your main skill. Gunnery is secondary to that. In fact, I’d say even maneuvering is secondary compared to situational awareness. Good situational awareness will get you kills and keep you alive over any amount of maneuvering or gunnery.
If you’re outnumbered, you want to maneuver in such a way that prevents multiple enemies getting their guns on you without them risking hitting each other. You also want to maneuver in such a way that they have to either break off or risk collission with each other.
Two planes colliding while you’re fighting for your life is one of the best feelings there is in a prop plane dogfight.
What leads to enemies shooting each other or colliding? Failure in the skills of situational awareness and 3D maneuvering.
Removing friendly fire or post-take off collissions will significantly reduce the skill floor (as attacker) and skill ceiling (as defender) in propeller dogfights.
And air RB is ideally nothing more but a more accessible version of air sim. This was more true back in the day than these days with match length and map design changes (Dover strait used to be an air RB map for props! Now you can only fly it in sim EC). This accessibility is reached in controls and third person view.