Never thought of that
I thought the hissing was the sound of the night
Well, if it's a sound you associate with camping then it can't be all bad.
The only time I use the lantern is in the morning before daylight to see to make coffee, and after dark maybe to read awhile or fish by. Once it's lit, you really can't see anything outside the circle of light.
It does make a nice "homey" scene from a distance though, like when returning from a nature call out in the woods.