eyelust I think it can help a lot with controlling when you're going to orgasm, if that's your goal.
I'll often start up a scene with the intention of finishing either at the end of the scene or i'll try to cum at the same time as the girl. 2 years ago when i got my headset this was pretty difficult, now i almost never finish before i want to.
But as far as technique goes, i doubt VR porn is very helpful. In fact it might be detrimental because of how "hands off" a lot of it is. In my experience girls require more sensuality and some clitoral stimulation to orgasm. In VR porn the male talent is almost forbidden from touching the clitoris because it can block the camera view.