you don't get it, the problem is not to not have the native oculus support on steam, the problem is that there apparently is a difference in framerate in both versions. This is a problem not only for oculus owners as they can feel scammed for buying the steam version while the oculus one runs much better ( apparently ), but it's also a problem for literally everyone buying the game on steam with a vr headset. There should be almost no differences in framerate in both versions, that's not acceptable and should be looked into it.
Of coures, the simple solution would be to be able to run natively the oculus, but I don't think it's the correct solution, we all should get the same performance regardless on the platform we choose to buy the game.