Trailer tire alignment

I noticed that the inside of my trailer tires were wearing at an accelerated rate. It was clearly a result of excessive positive camber.

/——-

I took it to a truck tire and alignment shop here in Atlanta, and they bent the axle in 2 places, in order to remove the camber. Cost $50

This trailer is 3 years old, and I have never hauled anything heavier than the Grizzly. I have driven over some rough roads, but nothing I would have thought would bend the axle.

Is this a typical problem ?