The absolute bare minimum:
Your jump must be decided by the vector of your movement when you hit the button. If it is not, there is literally nothing you can do to qualify.
Your actions must be aimed in real time and the outcome determined by the vector of your aim. Hitscan is shit, but it can qualify. If the action (not the vector of the shot) is decided by a dice roll, you unconditionally do not qualify.
There’s plenty more. But BG3 is not and does not in any way mechanically resemble a 3D action RPG. It has no common traits. The camera perspective outside of combat isn’t relevant.
I think you’re simply misunderstanding what “3D” means. 3D does not mean real-time, dynamic, or anything else. It simply means 3D. BG3 is entirely in 3D. Every single asset is 3D hell the entire explorable world is 3D. So yes, it quite literally is a 3D game. With action. Making it a 3D action game.
Think of what the alternative would be. Is this a 2D action game? Obviously not.
If you’re looking for a 3D real-time action game then yeah, this isn’t that. But that’s not what anyone’s arguing.
Edit: Also… is your argument that a game like Morrowind isn’t in 3D? Just because hits are handled by dice rolls? That’s insane lol.
No, it is not. You do not have a position in 3D space. You have a position on one of a small number of discrete 2D planes. BG3 is a 2D pure CRPG that happens to be decorated with 3D assets. Calling it a 3D game is the exact same unforgivable fraud as calling Metroid Dread one. It is not and does not in any way resemble it.
If you aren’t strictly in real time for combat, you unconditionally cannot be or resemble an action game.
To be fully 3D, literally every part of the core gameplay physics must occur in real time. Hits cannot be determined by any other factor but the vector of the attack projected through 3D space into a character’s hit box. The existence of a dice roll to determine a hit (not the vector) is an unconditional disqualifier in all contexts. There are no exceptions, and no room for them.
Everything about your description of BG3 is fully unhinged nonsense that should be offensive to any human being with any understanding of what games are. They aren’t nitpicks. You’re fundamentally destroying the core definition of very basic terms in a way that completely destroys all meaning. It would be less disgusting to be a flat earther.