The night visions people have are gen 1-2 and usually with zoom. Those are good if you sit in one place hiding and scan for movements. Usually that is not the case in airsoft games. Gen 1 and 1+ is basically good only if you have infra torch. If you use it, the red glow is visible and the torch's light is so bright on close objects, bushes, trees, grass that you don't see very far. If it is a zoomed scope version, then try using a normal scope in dusk to navigate around to see how much you see.
Looking into it destroys your eye's night vision so you see less when moving around without it than people without NV gear.
People without NV gear use flashlights, torches. One flash of it in your direction renders you blind, and when you turn it off, you don't see anything for a minute at least. If it is on your gun, you can't aim if it's turned off.