Even with my bonehead move of plumbing my fridge into the main water supply to my house before the water softener (water isn’t nearly as hard as what our old city water was though), the soluble iron in our water has yet to affect ours. Imagine my surprise when I opened the valve and I heard water start flowing despite the valve being off before the house filter!Every refrigerator I've ever had, including growing up has had a water dispenser and ice maker. None have ever broken.
I will say though…. For about 8 months our ice maker wasn’t working at all, then suddenly one day a few weeks ago it started working again with absolutely 0 input from us. I’m chalking that up to black magic wizardry.