We don't have malls where I live because we have nice weather year round and our redevelopment agencies always turn down things like that anyway. Our malls are always outdoor. There's a tendency to put a lot of planters and fountains and vendor carts and dining tables in the way to slow down all the walking, so you never can really walk in any of our malls.
If I lived in Minnesota or something for sure I'd probably become a mall walker, especially if I was older and had the time to hang out with my geezer buds.
Female, 5'3", 50, Max squat: 202.5lbs. Max deadlift: 225 x 3.