Not entirely sure why you would state it after the initial question like that, no flying is not assumed or necessarily the greatest vr movement mode (climbing exists).
That being said, yes, it has both the normal character flight mode, and a low gravity (zero gravity) custom movement mode that you can switch too.
Mass/weight doesn’t effect flight mode, character movement is logical not physical, other then that, yeah, MovementMode_Flying or MovementMode_LowGrav would do the trick.