NOT TRUE!!!
Keep em oiled and you won't have a problem. OP, how do you store it and where? Don't know where you are from but X-ring supply in Newark DE has Eesox, they brought it in for me so please go buy a can so they know they have customers for it. The cans are green camo so they are hard to find on a shelf with lots of other cleaners.
How often and for how many hours at a time have you had it outside in rain, mist, or heavy fog? How much rust comes off if/when you clean it as soon as you get home?