Sure but the game runs on UE4 and considering Switch supports UE4 and that the engine is scaleable (I believe?), this isn't exactly an overly difficult port to do.
Something like RDR2, or even not open world would be a better test case. Anything UE4 is pretty much fair game for Switch and hardly surprising if announced for the device.
Switch may support UE4 but that doesn't necessarily mean anything running on this engine is an easy port. Hellblade is still a demanding game that's 30fps even on PS4 wasn't designed with the limitations of a mobile SoC in mind.