Cabin real dimensions in VR

In the OpenXR toolkits menu, when I physically adjust my Reverb G2 IPD while in game, the OXR menu shows the corresponding world scale. IE that 100% world scale is set to match whatever IPD u just moved the slider to.

I assumed based on this that the game or at least OXR toolkit knows the IPD setting and sets that to match the current world scale. I would love to know if this is the case and if so, if MSFS can do this without OXR toolkits help.

I would assume once a person’s vision fits within the IPD of their headset and it’s set correctly, then a 100 percent in game world scale should be right once Microsoft modelled the aircraft correctly. But there’s so much to the vision system I might be wrong. I just feel instinctively that we shouldn’t have to be tweaking world scales per aircraft etc