NVGs are good but aren't the full answer. As Crab says, there needs to be an IFR option too, because if the goggles do finally become unworkable due to worsening weather, the pilot will then find himself far more deeply into IMC than if he had been using unaided eyesight. Been there, done it , seen it, then not seen it, if you get my drift.
If the pilot has no IFR fall back / abort / climb on instruments to a safe altitude plan, then it's possibly game over.
Because the pilot is now flying at night, in IMC, in a non-IFR equipped, unstabilised aircraft, having done no regular IF training, below safety altitude, in the hills, over sparsely lit terrain. With a pair of toilet roll tubes to look down. At least until he can find a spare hand to sort them out and start even thinking about an instrument scan, possibly whilst in an unintentional UP at low level above rising terrain.